Mercurial > hg > xemacs-beta
annotate src/window.c @ 5003:6b6b0f8ab749
#'union doesn't preserve relative order; use #'delete-duplicates instead.
2010-02-07 Aidan Kehoe <kehoea@parhasard.net>
* setup-paths.el (paths-find-emacs-roots)
(paths-construct-info-path):
* packages.el (packages-find-installation-package-directories):
#'union doesn't guarantee that it will preserve the relative order
of elements in its arguments; use #'delete-duplicates
instead. Thank you for the bug reports, Robert Pluim, Stephen
Turnbull.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 07 Feb 2010 14:37:35 +0000 |
| parents | 0d4c9d0f6a8d |
| children | d0c14ea98592 6f2158fa75ed b5df3737028a |
| rev | line source |
|---|---|
| 428 | 1 /* Window creation, deletion and examination for XEmacs. |
| 2 Copyright (C) 1985-1987, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 793 | 4 Copyright (C) 1995, 1996, 2002 Ben Wing. |
| 428 | 5 Copyright (C) 1996 Chuck Thompson. |
| 6 | |
| 7 This file is part of XEmacs. | |
| 8 | |
| 9 XEmacs is free software; you can redistribute it and/or modify it | |
| 10 under the terms of the GNU General Public License as published by the | |
| 11 Free Software Foundation; either version 2, or (at your option) any | |
| 12 later version. | |
| 13 | |
| 14 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 20 along with XEmacs; see the file COPYING. If not, write to | |
| 21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 22 Boston, MA 02111-1307, USA. */ | |
| 23 | |
| 24 /* Synched up with: FSF 19.30. */ | |
| 25 /* Beginning to diverge significantly. */ | |
| 26 | |
| 853 | 27 /* Authorship: |
| 28 | |
| 29 Based on code from pre-release FSF 19, c. 1991. | |
| 30 Significantly reworked by Chuck Thompson, 1993-1996. | |
| 31 window mirror stuff added by Chuck Thompson c. 1993. | |
| 32 various cleanup by Ben Wing c. 1995 (window slots, window init code, | |
| 33 memory usage, synch. up to FSF 19.30, other). | |
| 34 Unknown work by Andy Piper. | |
| 35 new window-width/height fns. by Ben Wing, Mar 2000. */ | |
| 36 | |
| 428 | 37 /* This file has been Mule-ized. */ |
| 38 | |
| 39 #include <config.h> | |
| 40 #include "lisp.h" | |
| 41 | |
| 42 #include "buffer.h" | |
| 800 | 43 #include "commands.h" |
| 872 | 44 #include "device-impl.h" |
| 800 | 45 #include "elhash.h" |
| 428 | 46 #include "faces.h" |
| 872 | 47 #include "frame-impl.h" |
| 800 | 48 #include "glyphs.h" |
| 49 #include "gutter.h" | |
| 428 | 50 #include "objects.h" |
| 51 #include "redisplay.h" | |
| 872 | 52 #include "window-impl.h" |
| 428 | 53 |
| 1149 | 54 Lisp_Object Qwindowp, Qwindow_live_p; |
| 428 | 55 Lisp_Object Qdisplay_buffer; |
| 56 | |
| 57 #ifdef MEMORY_USAGE_STATS | |
| 58 Lisp_Object Qface_cache, Qglyph_cache, Qline_start_cache, Qother_redisplay; | |
| 59 #ifdef HAVE_SCROLLBARS | |
| 60 Lisp_Object Qscrollbar_instances; | |
| 61 #endif | |
| 62 #endif | |
| 63 | |
| 1979 | 64 extern int allow_deletion_of_last_visible_frame; |
| 65 | |
| 428 | 66 EXFUN (Fnext_window, 4); |
| 67 | |
| 68 static int window_pixel_width_to_char_width (struct window *w, | |
| 69 int pixel_width, | |
| 70 int include_margins_p); | |
| 71 static int window_char_width_to_pixel_width (struct window *w, | |
| 72 int char_width, | |
| 73 int include_margins_p); | |
| 74 static int window_pixel_height_to_char_height (struct window *w, | |
| 75 int pixel_height, | |
| 76 int include_gutters_p); | |
| 77 static int window_char_height_to_pixel_height (struct window *w, | |
| 78 int char_height, | |
| 79 int include_gutters_p); | |
| 444 | 80 static void change_window_height (Lisp_Object window, int delta, |
| 81 Lisp_Object horizontalp, int inpixels); | |
| 428 | 82 |
| 83 /* Thickness of shadow border around 3d modelines. */ | |
| 84 Lisp_Object Vmodeline_shadow_thickness; | |
| 85 | |
| 86 /* Whether vertical dividers are draggable and displayed */ | |
| 87 Lisp_Object Vvertical_divider_always_visible_p; | |
| 88 | |
| 89 /* Whether a modeline should be displayed. */ | |
| 90 Lisp_Object Vhas_modeline_p; | |
| 91 | |
| 92 /* Thickness of shadow border around vertical dividers. */ | |
| 93 Lisp_Object Vvertical_divider_shadow_thickness; | |
| 94 | |
| 95 /* Divider surface width (not counting 3-d borders) */ | |
| 96 Lisp_Object Vvertical_divider_line_width; | |
| 97 | |
| 442 | 98 /* Spacing between outer edge of divider border and window edge */ |
| 428 | 99 Lisp_Object Vvertical_divider_spacing; |
| 100 | |
| 101 /* How much to scroll by per-line. */ | |
| 102 Lisp_Object Vwindow_pixel_scroll_increment; | |
| 103 | |
| 104 /* Scroll if point lands on the bottom line and that line is partially | |
| 105 clipped. */ | |
| 106 int scroll_on_clipped_lines; | |
| 107 | |
| 108 /* The minibuffer window of the selected frame. | |
| 109 Note that you cannot test for minibufferness of an arbitrary window | |
| 110 by comparing against this; but you can test for minibufferness of | |
| 111 the selected window. */ | |
| 112 Lisp_Object minibuf_window; | |
| 113 | |
| 114 /* Non-nil means it is the window for C-M-v to scroll | |
| 115 when the minibuffer is selected. */ | |
| 116 Lisp_Object Vminibuffer_scroll_window; | |
| 117 | |
| 118 /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
| 119 Lisp_Object Vother_window_scroll_buffer; | |
| 120 | |
| 121 /* Non-nil means it's the function to call to display temp buffers. */ | |
| 122 Lisp_Object Vtemp_buffer_show_function; | |
| 123 | |
| 124 /* If a window gets smaller than either of these, it is removed. */ | |
| 458 | 125 Fixnum window_min_height; |
| 126 Fixnum window_min_width; | |
| 428 | 127 |
| 128 /* Number of lines of continuity in scrolling by screenfuls. */ | |
| 458 | 129 Fixnum next_screen_context_lines; |
| 428 | 130 |
| 1149 | 131 Lisp_Object Qcurrent_window_configuration, Qset_window_configuration; |
| 428 | 132 |
| 707 | 133 Lisp_Object Qtruncate_partial_width_windows; |
| 134 | |
| 428 | 135 #define SET_LAST_MODIFIED(w, cache_too) \ |
| 136 do { \ | |
| 137 (w)->last_modified[CURRENT_DISP] = Qzero; \ | |
| 138 (w)->last_modified[DESIRED_DISP] = Qzero; \ | |
| 139 (w)->last_modified[CMOTION_DISP] = Qzero; \ | |
| 140 if (cache_too) \ | |
| 141 (w)->line_cache_last_updated = Qzero; \ | |
| 142 } while (0) | |
| 143 | |
| 144 #define SET_LAST_FACECHANGE(w) \ | |
| 145 do { \ | |
| 146 (w)->last_facechange[CURRENT_DISP] = Qzero; \ | |
| 147 (w)->last_facechange[DESIRED_DISP] = Qzero; \ | |
| 148 (w)->last_facechange[CMOTION_DISP] = Qzero; \ | |
| 149 } while (0) | |
| 150 | |
| 151 | |
| 1204 | 152 |
| 153 static const struct memory_description int_description_1[] = { | |
| 154 { XD_END } | |
| 155 }; | |
| 156 | |
| 157 static const struct sized_memory_description int_description = { | |
| 158 sizeof (int), | |
| 159 int_description_1 | |
| 160 }; | |
| 161 | |
| 162 static const struct memory_description int_dynarr_description_1[] = { | |
| 163 XD_DYNARR_DESC (int_dynarr, &int_description), | |
| 164 { XD_END } | |
| 165 }; | |
| 166 | |
| 167 static const struct sized_memory_description int_dynarr_description = { | |
| 168 sizeof (int_dynarr), | |
| 169 int_dynarr_description_1 | |
| 170 }; | |
| 171 | |
| 172 static const struct memory_description face_cachel_description_1[] = { | |
| 2367 | 173 { XD_BLOCK_PTR, offsetof (face_cachel, merged_faces), |
| 2551 | 174 1, { &int_dynarr_description } }, |
| 1204 | 175 { XD_LISP_OBJECT, offsetof (face_cachel, face) }, |
| 176 { XD_LISP_OBJECT, offsetof (face_cachel, foreground) }, | |
| 177 { XD_LISP_OBJECT, offsetof (face_cachel, background) }, | |
| 178 { XD_LISP_OBJECT_ARRAY, offsetof (face_cachel, font), NUM_LEADING_BYTES }, | |
| 179 { XD_LISP_OBJECT, offsetof (face_cachel, display_table) }, | |
| 180 { XD_LISP_OBJECT, offsetof (face_cachel, background_pixmap) }, | |
| 181 { XD_END } | |
| 182 }; | |
| 183 | |
| 3092 | 184 #ifdef NEW_GC |
| 185 DEFINE_LRECORD_IMPLEMENTATION ("face-cachel", face_cachel, | |
| 186 1, /*dumpable-flag*/ | |
| 187 0, 0, 0, 0, 0, | |
| 188 face_cachel_description_1, | |
| 189 Lisp_Face_Cachel); | |
| 190 #endif /* NEW_GC */ | |
| 191 | |
| 1204 | 192 static const struct sized_memory_description face_cachel_description = { |
| 193 sizeof (face_cachel), | |
| 194 face_cachel_description_1 | |
| 195 }; | |
| 196 | |
| 197 static const struct memory_description face_cachel_dynarr_description_1[] = { | |
| 3092 | 198 #ifdef NEW_GC |
| 199 XD_LISP_DYNARR_DESC (face_cachel_dynarr, &face_cachel_description), | |
| 200 #else /* not NEW_GC */ | |
| 1204 | 201 XD_DYNARR_DESC (face_cachel_dynarr, &face_cachel_description), |
| 3092 | 202 #endif /* not NEW_GC */ |
| 1204 | 203 { XD_END } |
| 204 }; | |
| 205 | |
| 3092 | 206 #ifdef NEW_GC |
| 207 DEFINE_LRECORD_IMPLEMENTATION ("face-cachel-dynarr", face_cachel_dynarr, | |
| 208 1, /*dumpable-flag*/ | |
| 209 0, 0, 0, 0, 0, | |
| 210 face_cachel_dynarr_description_1, | |
| 211 face_cachel_dynarr); | |
| 212 #else /* not NEW_GC */ | |
| 1204 | 213 static const struct sized_memory_description face_cachel_dynarr_description = { |
| 214 sizeof (face_cachel_dynarr), | |
| 215 face_cachel_dynarr_description_1 | |
| 216 }; | |
| 3092 | 217 #endif /* not NEW_GC */ |
| 1204 | 218 |
| 219 static const struct memory_description glyph_cachel_description_1[] = { | |
| 220 { XD_LISP_OBJECT, offsetof (glyph_cachel, glyph) }, | |
| 221 { XD_END } | |
| 222 }; | |
| 223 | |
| 3092 | 224 #ifdef NEW_GC |
| 225 DEFINE_LRECORD_IMPLEMENTATION ("glyph-cachel", glyph_cachel, | |
| 226 1, /*dumpable-flag*/ | |
| 227 0, 0, 0, 0, 0, | |
| 228 glyph_cachel_description_1, | |
| 229 Lisp_Glyph_Cachel); | |
| 230 #endif /* NEW_GC */ | |
| 231 | |
| 1204 | 232 static const struct sized_memory_description glyph_cachel_description = { |
| 233 sizeof (glyph_cachel), | |
| 234 glyph_cachel_description_1 | |
| 235 }; | |
| 236 | |
| 237 static const struct memory_description glyph_cachel_dynarr_description_1[] = { | |
| 3092 | 238 #ifdef NEW_GC |
| 239 XD_LISP_DYNARR_DESC (glyph_cachel_dynarr, &glyph_cachel_description), | |
| 240 #else /* not NEW_GC */ | |
| 1204 | 241 XD_DYNARR_DESC (glyph_cachel_dynarr, &glyph_cachel_description), |
| 3092 | 242 #endif /* not NEW_GC */ |
| 1204 | 243 { XD_END } |
| 244 }; | |
| 245 | |
| 3092 | 246 #ifdef NEW_GC |
| 247 DEFINE_LRECORD_IMPLEMENTATION ("glyph-cachel-dynarr", glyph_cachel_dynarr, | |
| 248 1, /*dumpable-flag*/ | |
| 249 0, 0, 0, 0, 0, | |
| 250 glyph_cachel_dynarr_description_1, | |
| 251 glyph_cachel_dynarr); | |
| 252 #else /* not NEW_GC */ | |
| 1204 | 253 static const struct sized_memory_description glyph_cachel_dynarr_description = { |
| 254 sizeof (glyph_cachel_dynarr), | |
| 255 glyph_cachel_dynarr_description_1 | |
| 256 }; | |
| 3092 | 257 #endif /* not NEW_GC */ |
| 1204 | 258 |
| 259 static const struct memory_description line_start_cache_description_1[] = { | |
| 260 { XD_END } | |
| 261 }; | |
| 262 | |
| 263 static const struct sized_memory_description line_start_cache_description = { | |
| 264 sizeof (line_start_cache), | |
| 265 line_start_cache_description_1 | |
| 266 }; | |
| 267 | |
| 268 static const struct memory_description line_start_cache_dynarr_description_1[] = { | |
| 269 XD_DYNARR_DESC (line_start_cache_dynarr, &line_start_cache_description), | |
| 270 { XD_END } | |
| 271 }; | |
| 272 | |
| 273 static const struct sized_memory_description line_start_cache_dynarr_description = { | |
| 274 sizeof (line_start_cache_dynarr), | |
| 275 line_start_cache_dynarr_description_1 | |
| 276 }; | |
| 277 | |
| 278 static const struct memory_description window_description [] = { | |
| 279 #define WINDOW_SLOT(slot) { XD_LISP_OBJECT, offsetof (struct window, slot) }, | |
| 280 #define WINDOW_SLOT_ARRAY(slot, size) \ | |
| 281 { XD_LISP_OBJECT_ARRAY, offsetof (struct window, slot), size }, | |
| 282 #include "winslots.h" | |
| 283 | |
| 3092 | 284 #ifdef NEW_GC |
| 285 { XD_LISP_OBJECT, offsetof (struct window, face_cachels) }, | |
| 286 { XD_LISP_OBJECT, offsetof (struct window, glyph_cachels) }, | |
| 287 #else /* not NEW_GC */ | |
| 2367 | 288 { XD_BLOCK_PTR, offsetof (struct window, face_cachels), |
| 2551 | 289 1, { &face_cachel_dynarr_description } }, |
| 2367 | 290 { XD_BLOCK_PTR, offsetof (struct window, glyph_cachels), |
| 2551 | 291 1, { &glyph_cachel_dynarr_description } }, |
| 3092 | 292 #endif /* not NEW_GC */ |
| 2367 | 293 { XD_BLOCK_PTR, offsetof (struct window, line_start_cache), |
| 2775 | 294 1, { &line_start_cache_dynarr_description }, XD_FLAG_NO_KKCC }, |
| 1204 | 295 { XD_END } |
| 296 }; | |
| 428 | 297 |
| 298 static Lisp_Object | |
| 299 mark_window (Lisp_Object obj) | |
| 300 { | |
| 301 struct window *window = XWINDOW (obj); | |
| 302 | |
| 303 mark_face_cachels (window->face_cachels); | |
| 304 mark_glyph_cachels (window->glyph_cachels); | |
| 305 | |
| 617 | 306 #define WINDOW_SLOT(slot) mark_object (window->slot); |
| 428 | 307 #include "winslots.h" |
| 308 | |
| 309 return Qnil; | |
| 310 } | |
| 311 | |
| 312 static void | |
| 2286 | 313 print_window (Lisp_Object obj, Lisp_Object printcharfun, |
| 314 int UNUSED (escapeflag)) | |
| 428 | 315 { |
| 4846 | 316 Lisp_Object buf; |
| 317 | |
| 428 | 318 if (print_readably) |
| 4846 | 319 printing_unreadable_lcrecord (obj, 0); |
| 428 | 320 |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4932
diff
changeset
|
321 write_ascstring (printcharfun, "#<window"); |
| 4846 | 322 buf = XWINDOW_BUFFER (obj); |
| 323 if (EQ (buf, Qt)) | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4932
diff
changeset
|
324 write_ascstring (printcharfun, " during creation"); |
| 4846 | 325 else if (!NILP (buf)) |
| 428 | 326 { |
| 4846 | 327 |
| 328 Lisp_Object name = XBUFFER (buf)->name; | |
| 800 | 329 write_fmt_string_lisp (printcharfun, " on %S", 1, name); |
| 428 | 330 } |
| 800 | 331 write_fmt_string (printcharfun, " 0x%x>", XWINDOW (obj)->header.uid); |
| 428 | 332 } |
| 333 | |
| 334 static void | |
| 2286 | 335 finalize_window (void *header, int UNUSED (for_disksave)) |
| 428 | 336 { |
| 337 struct window *w = (struct window *) header; | |
| 338 | |
| 339 if (w->line_start_cache) | |
| 340 { | |
| 341 Dynarr_free (w->line_start_cache); | |
| 342 w->line_start_cache = 0; | |
| 343 } | |
| 344 | |
| 345 if (w->face_cachels) | |
| 346 { | |
| 347 int i; | |
| 348 | |
| 349 for (i = 0; i < Dynarr_length (w->face_cachels); i++) | |
| 350 { | |
| 351 struct face_cachel *cachel = Dynarr_atp (w->face_cachels, i); | |
| 352 if (cachel->merged_faces) | |
| 353 { | |
| 354 Dynarr_free (cachel->merged_faces); | |
| 355 cachel->merged_faces = 0; | |
| 356 } | |
| 357 } | |
| 358 Dynarr_free (w->face_cachels); | |
| 359 w->face_cachels = 0; | |
| 360 } | |
| 361 | |
| 362 if (w->glyph_cachels) | |
| 363 { | |
| 364 Dynarr_free (w->glyph_cachels); | |
| 365 w->glyph_cachels = 0; | |
| 366 } | |
| 367 } | |
| 368 | |
| 844 | 369 /* These caches map buffers to markers. They are key-weak so that entries |
| 370 remain around as long as the buffers do. */ | |
| 371 | |
| 372 static Lisp_Object | |
| 373 make_saved_buffer_point_cache (void) | |
| 374 { | |
| 375 return make_lisp_hash_table (20, HASH_TABLE_KEY_WEAK, HASH_TABLE_EQ); | |
| 376 } | |
| 377 | |
| 934 | 378 DEFINE_LRECORD_IMPLEMENTATION ("window", window, |
| 379 0, /*dumpable-flag*/ | |
| 380 mark_window, print_window, finalize_window, | |
| 1204 | 381 0, 0, window_description, struct window); |
| 428 | 382 |
| 383 #define INIT_DISP_VARIABLE(field, initialization) \ | |
| 384 p->field[CURRENT_DISP] = initialization; \ | |
| 385 p->field[DESIRED_DISP] = initialization; \ | |
| 386 p->field[CMOTION_DISP] = initialization; | |
| 387 | |
| 388 /* We have an implicit assertion that the first two elements (default | |
| 389 and modeline faces) are always present in the face_element_cache. | |
| 390 Normally redisplay ensures this. However, it is possible for a | |
| 391 window to get created and functions which reference these values | |
| 392 called before redisplay works with the window for the first time. | |
| 393 All callers of allocate_window should therefore call | |
| 394 reset_face_cachels on the created window. We can't do it | |
| 395 here because the window must have its frame pointer set or | |
| 396 reset_face_cachels will fail. */ | |
| 397 Lisp_Object | |
| 398 allocate_window (void) | |
| 399 { | |
| 3017 | 400 struct window *p = ALLOC_LCRECORD_TYPE (struct window, &lrecord_window); |
| 1204 | 401 Lisp_Object val = wrap_window (p); |
| 617 | 402 |
| 403 #define WINDOW_SLOT(slot) p->slot = Qnil; | |
| 404 #include "winslots.h" | |
| 405 | |
| 428 | 406 INIT_DISP_VARIABLE (start, Fmake_marker ()); |
| 407 INIT_DISP_VARIABLE (pointm, Fmake_marker ()); | |
| 408 p->sb_point = Fmake_marker (); | |
| 844 | 409 p->saved_point_cache = make_saved_buffer_point_cache (); |
| 410 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
| 428 | 411 p->use_time = Qzero; |
| 412 INIT_DISP_VARIABLE (last_modified, Qzero); | |
| 413 INIT_DISP_VARIABLE (last_point, Fmake_marker ()); | |
| 414 INIT_DISP_VARIABLE (last_start, Fmake_marker ()); | |
| 415 INIT_DISP_VARIABLE (last_facechange, Qzero); | |
| 3092 | 416 #ifdef NEW_GC |
| 417 p->face_cachels = Dynarr_lisp_new (face_cachel, | |
| 418 &lrecord_face_cachel_dynarr, | |
| 419 &lrecord_face_cachel); | |
| 420 p->glyph_cachels = Dynarr_lisp_new (glyph_cachel, | |
| 421 &lrecord_glyph_cachel_dynarr, | |
| 422 &lrecord_glyph_cachel); | |
| 423 #else /* not NEW_GC */ | |
| 428 | 424 p->face_cachels = Dynarr_new (face_cachel); |
| 425 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
| 3092 | 426 #endif /* not NEW_GC */ |
| 428 | 427 p->line_start_cache = Dynarr_new (line_start_cache); |
| 450 | 428 p->subwindow_instance_cache = make_image_instance_cache_hash_table (); |
| 429 | |
| 428 | 430 p->line_cache_last_updated = Qzero; |
| 442 | 431 |
| 428 | 432 p->windows_changed = 1; |
| 433 p->shadow_thickness_changed = 1; | |
| 434 | |
| 435 return val; | |
| 436 } | |
| 437 #undef INIT_DISP_VARIABLE | |
| 438 | |
| 617 | 439 /************************************************************************/ |
| 440 /* Window mirror structure */ | |
| 441 /************************************************************************/ | |
| 442 | |
| 428 | 443 /* |
| 444 * The redisplay structures used to be stored with each window. While | |
| 445 * they are logically something associated with frames they can't be | |
| 446 * stored there with a redisplay which handles variable height lines. | |
| 447 * Lines in horizontally split windows might not line up. So they get | |
| 448 * stored with the windows. | |
| 449 * | |
| 450 * The problem with this is window configurations. When restoring a | |
| 451 * window configuration it now becomes problematic to do an | |
| 452 * incremental redisplay. The solution is to store the redisplay | |
| 453 * structures with the frame as they should be but laid out in the | |
| 454 * same manner as the window structure. Thus is born the window | |
| 455 * mirror. | |
| 456 * | |
| 457 * It also becomes a convenient place to stick scrollbar instances | |
| 458 * since they extrapolate out to having the same problem described for | |
| 459 * the display structures. | |
| 460 */ | |
| 461 | |
| 617 | 462 /* NOTE: The window-mirror structure formerly was not a Lisp object, and |
| 463 marking was handled specially. I've gotten recurring crashes, however, | |
| 464 using the mouse wheel under Windows, where either the window mirror | |
| 465 accessed through a scrollbar instance, or the frame pointed to by that | |
| 466 window mirror, gets garbaged. Things are tricky under windows because | |
| 467 the scrollbar instances are stored in HWND-specific data. Furthermore, | |
| 468 we have scrollbar-instance caches to complicate things. Both of these | |
| 469 make it very difficult (for me at least, not being intimately familiar | |
| 470 with the redisplay code) to track exactly when and where a particular | |
| 471 window mirror or scrollbar instance has pointers to it, or whether a | |
| 472 window mirror might have a dead frame or buffer in it (i.e. not | |
| 473 necessarily gc-protected by being on a global list). By far the safest | |
| 474 thing, then, is to make both structures Lisp objects and not explicitly | |
| 475 xfree() them. This should make no practical difference in memory usage | |
| 476 because neither structure is created very often (only when windows are | |
| 477 created or deleted). --ben */ | |
| 478 | |
| 1204 | 479 static const struct memory_description window_mirror_description [] = { |
| 480 { XD_LISP_OBJECT, offsetof (struct window_mirror, frame) }, | |
| 481 { XD_LISP_OBJECT, offsetof (struct window_mirror, next) }, | |
| 482 { XD_LISP_OBJECT, offsetof (struct window_mirror, hchild) }, | |
| 483 { XD_LISP_OBJECT, offsetof (struct window_mirror, vchild) }, | |
| 484 | |
| 2367 | 485 { XD_BLOCK_PTR, offsetof (struct window_mirror, current_display_lines), |
| 2551 | 486 1, { &display_line_dynarr_description } }, |
| 2367 | 487 { XD_BLOCK_PTR, offsetof (struct window_mirror, desired_display_lines), |
| 2551 | 488 1, { &display_line_dynarr_description } }, |
| 1204 | 489 |
| 490 { XD_LISP_OBJECT, offsetof (struct window_mirror, buffer) }, | |
| 491 | |
| 492 #ifdef HAVE_SCROLLBARS | |
| 493 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
| 494 scrollbar_vertical_instance) }, | |
| 495 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
| 496 scrollbar_horizontal_instance) }, | |
| 497 #endif /* HAVE_SCROLLBARS */ | |
| 498 | |
| 934 | 499 { XD_END } |
| 500 }; | |
| 501 | |
| 617 | 502 static Lisp_Object |
| 503 mark_window_mirror (Lisp_Object obj) | |
| 504 { | |
| 505 struct window_mirror *mir = XWINDOW_MIRROR (obj); | |
| 506 | |
| 507 if (mir->current_display_lines) | |
| 508 mark_redisplay_structs (mir->current_display_lines); | |
| 509 if (mir->desired_display_lines) | |
| 510 mark_redisplay_structs (mir->desired_display_lines); | |
| 511 | |
| 512 if (mir->hchild) | |
| 513 mark_object (wrap_window_mirror (mir->hchild)); | |
| 514 if (mir->vchild) | |
| 515 mark_object (wrap_window_mirror (mir->vchild)); | |
| 516 | |
| 517 if (mir->frame) | |
| 518 mark_object (wrap_frame (mir->frame)); | |
| 519 if (mir->buffer) | |
| 520 mark_object (wrap_buffer (mir->buffer)); | |
| 521 | |
| 522 #ifdef HAVE_SCROLLBARS | |
| 523 if (mir->scrollbar_vertical_instance) | |
| 524 mark_object (wrap_scrollbar_instance (mir->scrollbar_vertical_instance)); | |
| 525 if (mir->scrollbar_horizontal_instance) | |
| 526 mark_object (wrap_scrollbar_instance (mir->scrollbar_horizontal_instance)); | |
| 527 #endif /* HAVE_SCROLLBARS */ | |
| 528 if (mir->next) | |
| 529 return wrap_window_mirror (mir->next); | |
| 530 else | |
| 531 return Qnil; | |
| 532 } | |
| 533 | |
| 934 | 534 DEFINE_LRECORD_IMPLEMENTATION ("window-mirror", window_mirror, |
| 535 0, /*dumpable-flag*/ | |
| 536 mark_window_mirror, internal_object_printer, | |
| 1204 | 537 0, 0, 0, window_mirror_description, |
| 538 struct window_mirror); | |
| 617 | 539 |
| 428 | 540 /* Create a new window mirror structure and associated redisplay |
| 541 structs. */ | |
| 542 static struct window_mirror * | |
| 543 new_window_mirror (struct frame *f) | |
| 544 { | |
| 617 | 545 struct window_mirror *t = |
| 3017 | 546 ALLOC_LCRECORD_TYPE (struct window_mirror, &lrecord_window_mirror); |
| 428 | 547 |
| 548 t->frame = f; | |
| 549 t->current_display_lines = Dynarr_new (display_line); | |
| 550 t->desired_display_lines = Dynarr_new (display_line); | |
| 551 | |
| 552 return t; | |
| 553 } | |
| 554 | |
| 555 /* Synchronize the mirror structure with a given window structure. | |
| 556 This is normally called from update_frame_window_mirror with a | |
| 557 starting window of f->root_window. */ | |
| 558 static struct window_mirror * | |
| 559 update_mirror_internal (Lisp_Object win, struct window_mirror *mir) | |
| 560 { | |
| 561 if (NILP (win)) | |
| 562 { | |
| 563 if (mir) | |
| 564 { | |
| 565 free_window_mirror (mir); | |
| 566 mir = NULL; | |
| 567 } | |
| 568 return mir; | |
| 569 } | |
| 570 else | |
| 571 if (!mir) | |
| 572 mir = new_window_mirror (XFRAME (XWINDOW (win)->frame)); | |
| 573 | |
| 1204 | 574 mir->next = update_mirror_internal (XWINDOW (win)->next, mir->next); |
| 428 | 575 mir->hchild = update_mirror_internal (XWINDOW (win)->hchild, mir->hchild); |
| 576 mir->vchild = update_mirror_internal (XWINDOW (win)->vchild, mir->vchild); | |
| 577 | |
| 578 /* | |
| 579 * If the redisplay structs are not empty and the mirror has | |
| 580 * children, then this mirror structure was formerly being used for | |
| 581 * display but is no longer. Reset its current display structs so | |
| 582 * that redisplay doesn't accidentally think they are accurate if it | |
| 583 * is later used for display purposes once again. Also, mark the | |
| 584 * scrollbar instance as not active. | |
| 585 */ | |
| 586 if (mir->vchild || mir->hchild) | |
| 587 { | |
| 588 /* The redisplay structures are big. Leaving them around in | |
| 589 non-leaf windows can add up to a lot of wasted space. So | |
| 590 don't do it. */ | |
| 591 free_display_structs (mir); | |
| 592 mir->current_display_lines = Dynarr_new (display_line); | |
| 593 mir->desired_display_lines = Dynarr_new (display_line); | |
| 594 | |
| 595 #ifdef HAVE_SCROLLBARS | |
| 596 update_window_scrollbars (XWINDOW (win), mir, 0, 0); | |
| 597 #endif | |
| 598 mir->buffer = NULL; | |
| 599 } | |
| 600 | |
| 601 return mir; | |
| 602 } | |
| 603 | |
| 604 /* Given a window mirror, determine which real window it contains the | |
| 605 redisplay structures for. */ | |
| 606 static Lisp_Object | |
| 607 real_window_internal (Lisp_Object win, struct window_mirror *rmir, | |
| 608 struct window_mirror *mir) | |
| 609 { | |
| 610 for (; !NILP (win) && rmir ; win = XWINDOW (win)->next, rmir = rmir->next) | |
| 611 { | |
| 612 if (mir == rmir) | |
| 613 return win; | |
| 614 if (!NILP (XWINDOW (win)->vchild)) | |
| 615 { | |
| 616 Lisp_Object retval = | |
| 617 real_window_internal (XWINDOW (win)->vchild, rmir->vchild, mir); | |
| 618 if (!NILP (retval)) | |
| 619 return retval; | |
| 620 } | |
| 621 if (!NILP (XWINDOW (win)->hchild)) | |
| 622 { | |
| 623 Lisp_Object retval = | |
| 624 real_window_internal (XWINDOW (win)->hchild, rmir->hchild, mir); | |
| 625 if (!NILP (retval)) | |
| 626 return retval; | |
| 627 } | |
| 628 } | |
| 629 | |
| 630 return Qnil; | |
| 631 } | |
| 632 | |
| 633 /* Given a real window, find the mirror structure which contains its | |
| 634 redisplay structures. */ | |
| 635 static struct window_mirror * | |
| 636 find_window_mirror_internal (Lisp_Object win, struct window_mirror *rmir, | |
| 637 struct window *w) | |
| 638 { | |
| 639 for (; !NILP (win); win = XWINDOW (win)->next, rmir = rmir->next) | |
| 640 { | |
| 641 if (w == XWINDOW (win)) | |
| 642 return rmir; | |
| 643 | |
| 644 if (!NILP (XWINDOW (win)->vchild)) | |
| 645 { | |
| 646 struct window_mirror *retval = | |
| 647 find_window_mirror_internal (XWINDOW (win)->vchild, | |
| 648 rmir->vchild, w); | |
| 649 if (retval) return retval; | |
| 650 } | |
| 651 | |
| 652 if (!NILP (XWINDOW (win)->hchild)) | |
| 653 { | |
| 654 struct window_mirror *retval = | |
| 655 find_window_mirror_internal (XWINDOW (win)->hchild, | |
| 656 rmir->hchild, w); | |
| 657 if (retval) return retval; | |
| 658 } | |
| 659 } | |
| 660 | |
| 661 return 0; | |
| 662 } | |
| 663 | |
| 664 /* Update the mirror structure for the given frame. */ | |
| 665 void | |
| 666 update_frame_window_mirror (struct frame *f) | |
| 667 { | |
| 617 | 668 f->root_mirror = |
| 669 wrap_window_mirror (update_mirror_internal | |
| 670 (f->root_window, | |
| 671 NILP (f->root_mirror) ? 0 : | |
| 672 XWINDOW_MIRROR (f->root_mirror))); | |
| 428 | 673 f->mirror_dirty = 0; |
| 674 } | |
| 675 | |
| 676 /* Free a given mirror structure along with all of its children as | |
| 677 well as their associated display structures. */ | |
| 678 void | |
| 679 free_window_mirror (struct window_mirror *mir) | |
| 680 { | |
| 681 while (mir) | |
| 682 { | |
| 683 if (mir->hchild) free_window_mirror (mir->hchild); | |
| 684 if (mir->vchild) free_window_mirror (mir->vchild); | |
| 685 #ifdef HAVE_SCROLLBARS | |
| 686 release_window_mirror_scrollbars (mir); | |
| 687 #endif | |
| 688 free_display_structs (mir); | |
| 689 mir = mir->next; | |
| 617 | 690 /* not worth calling free_managed_lcrecord() -- window mirrors |
| 691 are not created that frequently and it's dangerous. we don't | |
| 692 know for sure that there aren't other pointers around -- e.g. | |
| 693 in a scrollbar instance. */ | |
| 428 | 694 } |
| 695 } | |
| 696 | |
| 697 /* Given a mirror structure, return the window it mirrors. Calls | |
| 698 real_window_internal to do most of the work. */ | |
| 699 Lisp_Object | |
| 700 real_window (struct window_mirror *mir, int no_abort) | |
| 701 { | |
| 617 | 702 Lisp_Object retval = |
| 703 real_window_internal (mir->frame->root_window, | |
| 704 XWINDOW_MIRROR (mir->frame->root_mirror), mir); | |
| 428 | 705 if (NILP (retval) && !no_abort) |
| 2500 | 706 ABORT (); |
| 428 | 707 |
| 708 return retval; | |
| 709 } | |
| 710 | |
| 711 /* Given a real window, return its mirror structure. Calls | |
| 712 find_window_mirror_internal to do all of the work. */ | |
| 713 struct window_mirror * | |
| 714 find_window_mirror (struct window *w) | |
| 715 { | |
| 716 struct frame *f = XFRAME (w->frame); | |
| 717 if (f->mirror_dirty) | |
| 718 update_frame_window_mirror (f); | |
| 617 | 719 return find_window_mirror_internal (f->root_window, |
| 720 XWINDOW_MIRROR (f->root_mirror), w); | |
| 428 | 721 } |
| 722 | |
| 723 /***************************************************************************** | |
| 724 find_window_by_pixel_pos | |
| 725 | |
| 726 Given a pixel position relative to a frame, find the window at that | |
| 727 position. | |
| 728 ****************************************************************************/ | |
| 729 struct window * | |
| 730 find_window_by_pixel_pos (int pix_x, int pix_y, Lisp_Object win) | |
| 731 { | |
| 732 if (NILP (win)) | |
| 733 return 0; | |
| 734 | |
| 735 for (; !NILP (win); win = XWINDOW (win)->next) | |
| 736 { | |
| 737 struct window *w; | |
| 738 | |
| 739 if (!NILP (XWINDOW (win)->vchild)) | |
| 740 { | |
| 741 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->vchild); | |
| 742 if (w) return w; | |
| 743 } | |
| 744 if (!NILP (XWINDOW (win)->hchild)) | |
| 745 { | |
| 746 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->hchild); | |
| 747 if (w) return w; | |
| 748 } | |
| 749 w = XWINDOW (win); | |
| 750 if (pix_x >= WINDOW_LEFT (w) | |
| 751 && pix_x <= WINDOW_RIGHT (w) | |
| 752 && pix_y >= WINDOW_TOP (w) | |
| 753 && pix_y <= WINDOW_BOTTOM (w)) | |
| 754 return w; | |
| 755 } | |
| 756 return NULL; | |
| 757 } | |
| 758 | |
| 759 /* Return a pointer to the display structures for the given window. */ | |
| 760 display_line_dynarr * | |
| 761 window_display_lines (struct window *w, int which) | |
| 762 { | |
| 763 struct window_mirror *t; | |
| 764 | |
| 765 if (XFRAME (w->frame)->mirror_dirty) | |
| 766 update_frame_window_mirror (XFRAME (w->frame)); | |
| 767 t = find_window_mirror (w); | |
| 768 if (!t) | |
| 2500 | 769 ABORT (); |
| 428 | 770 |
| 771 if (which == CURRENT_DISP) | |
| 772 return t->current_display_lines; | |
| 773 else if (which == DESIRED_DISP) | |
| 774 return t->desired_display_lines; | |
| 775 else if (which == CMOTION_DISP) | |
| 776 /* The CMOTION_DISP display lines are global. */ | |
| 777 return cmotion_display_lines; | |
| 778 else | |
| 2500 | 779 ABORT (); |
| 428 | 780 |
| 781 return 0; /* shut up compiler */ | |
| 782 } | |
| 783 | |
| 784 struct buffer * | |
| 785 window_display_buffer (struct window *w) | |
| 786 { | |
| 787 struct window_mirror *t; | |
| 788 | |
| 789 if (XFRAME (w->frame)->mirror_dirty) | |
| 790 update_frame_window_mirror (XFRAME (w->frame)); | |
| 791 t = find_window_mirror (w); | |
| 792 if (!t) | |
| 2500 | 793 ABORT (); |
| 428 | 794 |
| 795 return t->buffer; | |
| 796 } | |
| 797 | |
| 798 void | |
| 799 set_window_display_buffer (struct window *w, struct buffer *b) | |
| 800 { | |
| 801 struct window_mirror *t; | |
| 802 | |
| 803 if (XFRAME (w->frame)->mirror_dirty) | |
| 804 update_frame_window_mirror (XFRAME (w->frame)); | |
| 805 t = find_window_mirror (w); | |
| 806 if (!t) | |
| 2500 | 807 ABORT (); |
| 428 | 808 |
| 809 t->buffer = b; | |
| 810 } | |
| 811 | |
| 812 | |
| 813 /* Determining a window's position based solely on its pixel | |
| 814 positioning doesn't work. Instead, we do it the intelligent way, | |
| 815 by checking its positioning in the window hierarchy. */ | |
| 816 int | |
| 817 window_is_leftmost (struct window *w) | |
| 818 { | |
| 819 Lisp_Object parent, current_ancestor, window; | |
| 820 | |
| 793 | 821 window = wrap_window (w); |
| 428 | 822 |
| 823 parent = XWINDOW (window)->parent; | |
| 824 current_ancestor = window; | |
| 825 | |
| 826 while (!NILP (parent)) | |
| 827 { | |
| 828 if (!NILP (XWINDOW (parent)->hchild) && | |
| 829 !EQ (XWINDOW (parent)->hchild, current_ancestor)) | |
| 830 return 0; | |
| 831 | |
| 832 current_ancestor = parent; | |
| 833 parent = XWINDOW (parent)->parent; | |
| 834 } | |
| 835 | |
| 836 return 1; | |
| 837 } | |
| 838 | |
| 839 int | |
| 840 window_is_rightmost (struct window *w) | |
| 841 { | |
| 842 Lisp_Object parent, current_ancestor, window; | |
| 843 | |
| 793 | 844 window = wrap_window (w); |
| 428 | 845 |
| 846 parent = XWINDOW (window)->parent; | |
| 847 current_ancestor = window; | |
| 848 | |
| 849 while (!NILP (parent)) | |
| 850 { | |
| 851 if (!NILP (XWINDOW (parent)->hchild) | |
| 852 && !NILP (XWINDOW (current_ancestor)->next)) | |
| 853 return 0; | |
| 854 | |
| 855 current_ancestor = parent; | |
| 856 parent = XWINDOW (parent)->parent; | |
| 857 } | |
| 858 | |
| 859 return 1; | |
| 860 } | |
| 861 | |
| 862 static int | |
| 863 window_full_width_p (struct window *w) | |
| 864 { | |
| 865 return window_is_leftmost (w) && window_is_rightmost (w); | |
| 866 } | |
| 867 | |
| 868 int | |
| 869 window_is_highest (struct window *w) | |
| 870 { | |
| 871 Lisp_Object parent, current_ancestor, window; | |
| 872 | |
| 793 | 873 window = wrap_window (w); |
| 428 | 874 |
| 875 parent = XWINDOW (window)->parent; | |
| 876 current_ancestor = window; | |
| 877 | |
| 878 while (!NILP (parent)) | |
| 879 { | |
| 880 if (!NILP (XWINDOW (parent)->vchild) && | |
| 881 !EQ (XWINDOW (parent)->vchild, current_ancestor)) | |
| 882 return 0; | |
| 883 | |
| 884 current_ancestor = parent; | |
| 885 parent = XWINDOW (parent)->parent; | |
| 886 } | |
| 887 | |
| 888 /* This is really to catch the minibuffer but we make it generic in | |
| 889 case we ever change things around to let the minibuffer be on top. */ | |
| 890 if (NILP (XWINDOW (current_ancestor)->prev)) | |
| 891 return 1; | |
| 892 else | |
| 893 return 0; | |
| 894 } | |
| 895 | |
| 896 int | |
| 897 window_is_lowest (struct window *w) | |
| 898 { | |
| 899 Lisp_Object parent, current_ancestor, window; | |
| 900 | |
| 793 | 901 window = wrap_window (w); |
| 428 | 902 |
| 903 parent = XWINDOW (window)->parent; | |
| 904 current_ancestor = window; | |
| 905 | |
| 906 while (!NILP (parent)) | |
| 907 { | |
| 908 if (!NILP (XWINDOW (parent)->vchild) | |
| 909 && !NILP (XWINDOW (current_ancestor)->next)) | |
| 910 return 0; | |
| 911 | |
| 912 current_ancestor = parent; | |
| 913 parent = XWINDOW (parent)->parent; | |
| 914 } | |
| 915 | |
| 916 return 1; | |
| 917 } | |
| 918 | |
| 919 #if 0 /* not currently used */ | |
| 920 | |
| 921 static int | |
| 922 window_full_height_p (struct window *w) | |
| 923 { | |
| 924 return window_is_highest (w) && window_is_lowest (w); | |
| 925 } | |
| 926 | |
| 927 #endif | |
| 928 | |
| 929 int | |
| 930 window_truncation_on (struct window *w) | |
| 931 { | |
| 932 /* Minibuffer windows are never truncated. | |
| 440 | 933 #### is this the right way ? */ |
| 428 | 934 if (MINI_WINDOW_P (w)) |
| 935 return 0; | |
| 936 | |
| 937 /* Horizontally scrolled windows are truncated. */ | |
| 938 if (w->hscroll) | |
| 939 return 1; | |
| 940 | |
| 941 /* If truncate_partial_width_windows is true and the window is not | |
| 942 the full width of the frame it is truncated. */ | |
| 707 | 943 if (!NILP (symbol_value_in_buffer (Qtruncate_partial_width_windows, |
| 944 w->buffer)) | |
| 428 | 945 && !(window_is_leftmost (w) && window_is_rightmost (w))) |
| 946 return 1; | |
| 947 | |
| 948 /* If the window's buffer's value of truncate_lines is non-nil, then | |
| 949 the window is truncated. */ | |
| 950 if (!NILP (XBUFFER (w->buffer)->truncate_lines)) | |
| 951 return 1; | |
| 952 | |
| 953 return 0; | |
| 954 } | |
| 955 | |
| 956 DEFUN ("window-truncated-p", Fwindow_truncated_p, 0, 1, 0, /* | |
| 442 | 957 Returns non-nil if text in the window is truncated. |
| 428 | 958 */ |
| 959 (window)) | |
| 960 { | |
| 961 struct window *w = decode_window (window); | |
| 962 | |
| 963 return window_truncation_on (w) ? Qt : Qnil; | |
| 964 } | |
| 965 | |
| 966 | |
| 967 static int | |
| 968 have_undivided_common_edge (struct window *w_right, void *closure) | |
| 969 { | |
| 970 struct window *w_left = (struct window *) closure; | |
| 971 return (WINDOW_RIGHT (w_left) == WINDOW_LEFT (w_right) | |
| 972 && WINDOW_TOP (w_left) < WINDOW_BOTTOM (w_right) | |
| 973 && WINDOW_TOP (w_right) < WINDOW_BOTTOM (w_left) | |
| 974 #ifdef HAVE_SCROLLBARS | |
| 975 && (NILP (w_right->scrollbar_on_left_p) | |
| 976 || NILP (w_right->vertical_scrollbar_visible_p) | |
| 977 || ZEROP (w_right->scrollbar_width)) | |
| 978 #endif | |
| 979 ); | |
| 980 } | |
| 981 | |
| 982 static int | |
| 983 window_needs_vertical_divider_1 (struct window *w) | |
| 984 { | |
| 985 /* Never if we're on the right */ | |
| 986 if (window_is_rightmost (w)) | |
| 987 return 0; | |
| 988 | |
| 989 /* Always if draggable */ | |
| 990 if (!NILP (w->vertical_divider_always_visible_p)) | |
| 991 return 1; | |
| 992 | |
| 993 #ifdef HAVE_SCROLLBARS | |
| 994 /* Our right scrollbar is enough to separate us at the right */ | |
| 995 if (NILP (w->scrollbar_on_left_p) | |
| 996 && !NILP (w->vertical_scrollbar_visible_p) | |
| 997 && !ZEROP (w->scrollbar_width)) | |
| 998 return 0; | |
| 999 #endif | |
| 1000 | |
| 1001 /* Ok. to determine whether we need a divider on the left, we must | |
| 1002 check that our right neighbor windows have scrollbars on their | |
| 1003 left sides. We must check all such windows which have common | |
| 1004 left edge with our window's right edge. */ | |
| 1005 return map_windows (XFRAME (WINDOW_FRAME (w)), | |
| 1006 have_undivided_common_edge, (void*)w); | |
| 1007 } | |
| 1008 | |
| 1009 int | |
| 1010 window_needs_vertical_divider (struct window *w) | |
| 1011 { | |
| 1012 if (!w->need_vertical_divider_valid_p) | |
| 1013 { | |
| 1014 w->need_vertical_divider_p = | |
| 1015 window_needs_vertical_divider_1 (w); | |
| 1016 w->need_vertical_divider_valid_p = 1; | |
| 1017 } | |
| 1018 return w->need_vertical_divider_p; | |
| 1019 } | |
| 1020 | |
| 1021 /* Called from invalidate_vertical_divider_cache_in_frame */ | |
| 1022 int | |
| 1023 invalidate_vertical_divider_cache_in_window (struct window *w, | |
| 2286 | 1024 void *UNUSED (unused)) |
| 428 | 1025 { |
| 1026 w->need_vertical_divider_valid_p = 0; | |
| 1027 return 0; | |
| 1028 } | |
| 1029 | |
| 1030 /* Calculate width of vertical divider, including its shadows | |
| 1031 and spacing. The returned value is effectively the distance | |
| 1032 between adjacent window edges. This function does not check | |
| 1033 whether a window needs a vertical divider, so the returned | |
| 1034 value is a "theoretical" one */ | |
| 1035 int | |
| 1036 window_divider_width (struct window *w) | |
| 1037 { | |
| 1038 /* the shadow thickness can be negative. This means that the divider | |
| 1039 will have a depressed look */ | |
| 1040 | |
| 1041 if (FRAME_WIN_P (XFRAME (WINDOW_FRAME (w)))) | |
| 1042 return | |
| 1043 XINT (w->vertical_divider_line_width) | |
| 1044 + 2 * XINT (w->vertical_divider_spacing) | |
| 1045 + 2 * abs (XINT (w->vertical_divider_shadow_thickness)); | |
| 1046 else | |
| 1047 return XINT (w->vertical_divider_line_width) == 0 ? 0 : 1; | |
| 1048 } | |
| 1049 | |
| 1050 int | |
| 4932 | 1051 window_scrollbar_width (struct window * USED_IF_SCROLLBARS (w)) |
| 428 | 1052 { |
| 1053 #ifdef HAVE_SCROLLBARS | |
| 1054 if (!WINDOW_WIN_P (w) | |
| 1055 || MINI_WINDOW_P (w) | |
| 1056 || NILP (w->buffer) | |
| 1057 || NILP (w->vertical_scrollbar_visible_p)) | |
| 1058 /* #### when does NILP (w->buffer) happen? */ | |
| 1059 return 0; | |
| 1060 | |
| 1061 return XINT (w->scrollbar_width); | |
| 1062 #else | |
| 1063 return 0; | |
| 1064 #endif /* HAVE_SCROLLBARS */ | |
| 1065 } | |
| 1066 | |
| 1067 /* Horizontal scrollbars are only active on windows with truncation | |
| 1068 turned on. */ | |
| 1069 int | |
| 4932 | 1070 window_scrollbar_height (struct window * USED_IF_SCROLLBARS (w)) |
| 428 | 1071 { |
| 1072 #ifdef HAVE_SCROLLBARS | |
| 1073 if (!WINDOW_WIN_P (w) | |
| 1074 || MINI_WINDOW_P (w) | |
| 1075 || NILP (w->buffer) | |
| 1076 || NILP (w->horizontal_scrollbar_visible_p) | |
| 1077 || !window_truncation_on (w)) | |
| 1078 return 0; | |
| 1079 | |
| 1080 return XINT (w->scrollbar_height); | |
| 1081 #else | |
| 1082 return 0; | |
| 1083 #endif /* HAVE_SCROLLBARS */ | |
| 1084 } | |
| 1085 | |
| 1086 int | |
| 1087 window_modeline_height (struct window *w) | |
| 1088 { | |
| 1089 struct frame *f = XFRAME (w->frame); | |
| 1090 int modeline_height; | |
| 1091 | |
| 1092 if (MINI_WINDOW_P (w) || NILP (w->buffer)) | |
| 1093 { | |
| 1094 modeline_height = 0; | |
| 1095 } | |
| 1096 else if (!WINDOW_HAS_MODELINE_P (w)) | |
| 1097 { | |
| 1098 if (window_scrollbar_height (w)) | |
| 1099 modeline_height = 0; | |
| 1100 else | |
| 1101 { | |
| 1102 modeline_height = FRAMEMETH (f, divider_height, ()); | |
| 1103 | |
| 1104 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 1105 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
| 1106 } | |
| 1107 } | |
| 1108 else | |
| 1109 { | |
| 1110 if (noninteractive) | |
| 1111 modeline_height = 0; | |
| 1112 else | |
| 1113 { | |
| 1114 display_line_dynarr *dla; | |
| 1115 | |
| 1116 /* We don't force a regeneration of the modeline here. | |
| 1117 Instead it is now a precondition that any function calling | |
| 1118 this should make sure that one of these structures is | |
| 1119 up-to-date. In practice this only affects two internal | |
| 1120 redisplay functions, regenerate_window and | |
| 1121 regenerate_window_point_center. */ | |
| 1122 /* We check DESIRED_DISP because if it is valid it is more | |
| 1123 up-to-date than CURRENT_DISP. For calls to this outside | |
| 1124 of redisplay it doesn't matter which structure we check | |
| 1125 since there is a redisplay condition that these | |
| 1126 structures be identical outside of redisplay. */ | |
| 1127 dla = window_display_lines (w, DESIRED_DISP); | |
| 4967 | 1128 if (dla && Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 1129 modeline_height = (Dynarr_begin (dla)->ascent + | |
| 1130 Dynarr_begin (dla)->descent); | |
| 428 | 1131 else |
| 1132 { | |
| 1133 dla = window_display_lines (w, CURRENT_DISP); | |
| 4967 | 1134 if (dla && Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 1135 modeline_height = (Dynarr_begin (dla)->ascent + | |
| 1136 Dynarr_begin (dla)->descent); | |
| 428 | 1137 else |
| 1138 /* This should be an abort except I'm not yet 100% | |
| 1139 confident that it won't ever get hit (though I | |
| 1140 haven't been able to trigger it). It is extremely | |
| 1141 unlikely to cause any noticeable problem and even if | |
| 1142 it does it will be a minor display glitch. */ | |
| 1143 /* #### Bullshit alert. It does get hit and it causes | |
| 1144 noticeable glitches. real_current_modeline_height | |
| 1145 is a kludge to fix this for 19.14. */ | |
| 1146 modeline_height = real_current_modeline_height (w); | |
| 1147 } | |
| 1148 | |
| 1149 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 1150 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
| 1151 } | |
| 1152 } | |
| 1153 | |
| 1154 return modeline_height; | |
| 1155 } | |
| 1156 | |
| 1157 /***************************************************************************** | |
| 1158 margin_width_internal | |
| 1159 | |
| 1160 For a given window, return the width in pixels of the specified margin. | |
| 1161 ****************************************************************************/ | |
| 1162 static int | |
| 1163 margin_width_internal (struct window *w, int left_margin) | |
| 1164 { | |
| 1165 int window_cwidth = window_char_width (w, 1); | |
| 1166 int margin_cwidth; | |
| 1167 int font_width; | |
| 1168 Lisp_Object window; | |
| 1169 | |
| 1170 /* We might be getting called on a non-leaf. */ | |
| 1171 if (NILP (w->buffer)) | |
| 1172 return 0; | |
| 1173 | |
| 1174 /* The minibuffer never has margins. */ | |
| 1175 if (MINI_WINDOW_P (w)) | |
| 1176 return 0; | |
| 1177 | |
| 793 | 1178 window = wrap_window (w); |
| 428 | 1179 margin_cwidth = (left_margin ? XINT (w->left_margin_width) : |
| 1180 XINT (w->right_margin_width)); | |
| 1181 | |
| 1182 default_face_height_and_width (window, 0, &font_width); | |
| 1183 | |
| 1184 /* The left margin takes precedence over the right margin so we | |
| 1185 subtract its width from the space available for the right | |
| 1186 margin. */ | |
| 1187 if (!left_margin) | |
| 1188 window_cwidth -= XINT (w->left_margin_width); | |
| 1189 | |
| 1190 /* The margin cannot be wider than the window is. We allow the | |
| 1191 value to be bigger since it is possible for the user to enlarge | |
| 1192 the window such that the left margin value would no longer be too | |
| 1193 big, but we won't return a value that is larger. */ | |
| 1194 if (margin_cwidth > window_cwidth) | |
| 1195 margin_cwidth = window_cwidth; | |
| 1196 | |
| 1197 /* At the user level the margin is always specified in characters. | |
| 1198 Internally however it is manipulated in terms of pixels. */ | |
| 1199 return margin_cwidth * font_width; | |
| 1200 } | |
| 1201 | |
| 1202 int | |
| 1203 window_left_margin_width (struct window *w) | |
| 1204 { | |
| 1205 return margin_width_internal (w, 1); | |
| 1206 } | |
| 1207 | |
| 1208 int | |
| 1209 window_right_margin_width (struct window *w) | |
| 1210 { | |
| 1211 return margin_width_internal (w, 0); | |
| 1212 } | |
| 1213 | |
| 1214 /***************************************************************************** | |
| 1215 Window Gutters | |
| 1216 | |
| 1217 The gutters of a window are those areas in the boundary defined by | |
| 1218 w->pixel_top, w->pixel_left, w->pixel_height and w->pixel_width which | |
| 1219 do not contain text. Items which may be in the gutters include | |
| 1220 scrollbars, toolbars and modelines. The margin areas are not | |
| 1221 included. This is an exception made because redisplay special cases | |
| 1222 the handling of those areas in many places in such a way that | |
| 1223 including them in the gutter area would make life difficult. | |
| 1224 | |
| 1225 The size functions refer to height for the bottom and top gutters and | |
| 1226 width for the left and right gutters. The starting position | |
| 1227 functions refer to the Y coord for bottom and top gutters and the X | |
| 1228 coord for left and right gutters. All starting positions are | |
| 1229 relative to the frame, not the window. | |
| 1230 ****************************************************************************/ | |
| 1231 | |
| 442 | 1232 static int |
| 1233 window_top_window_gutter_height (struct window *w) | |
| 1234 { | |
| 428 | 1235 if (!NILP (w->hchild) || !NILP (w->vchild)) |
| 1236 return 0; | |
| 1237 | |
| 1238 #ifdef HAVE_SCROLLBARS | |
| 1239 if (!NILP (w->scrollbar_on_top_p)) | |
| 442 | 1240 return window_scrollbar_height (w); |
| 428 | 1241 else |
| 1242 #endif | |
| 442 | 1243 return 0; |
| 428 | 1244 } |
| 1245 | |
| 1246 int | |
| 442 | 1247 window_top_gutter_height (struct window *w) |
| 1248 { | |
| 1249 return window_top_window_gutter_height (w); | |
| 1250 } | |
| 1251 | |
| 1252 static int | |
| 1253 window_bottom_window_gutter_height (struct window *w) | |
| 1254 { | |
| 1255 int gutter; | |
| 428 | 1256 |
| 1257 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 1258 return 0; | |
| 1259 | |
| 442 | 1260 gutter = window_modeline_height (w); |
| 428 | 1261 |
| 1262 #ifdef HAVE_SCROLLBARS | |
| 1263 if (NILP (w->scrollbar_on_top_p)) | |
| 1264 return window_scrollbar_height (w) + gutter; | |
| 1265 else | |
| 1266 #endif | |
| 1267 return gutter; | |
| 1268 } | |
| 1269 | |
| 1270 int | |
| 442 | 1271 window_bottom_gutter_height (struct window *w) |
| 1272 { | |
| 1273 return window_bottom_window_gutter_height (w); | |
| 1274 } | |
| 1275 | |
| 1276 static int | |
| 4932 | 1277 window_left_window_gutter_width (struct window *w, |
| 1278 int USED_IF_SCROLLBARS (modeline)) | |
| 442 | 1279 { |
| 428 | 1280 if (!NILP (w->hchild) || !NILP (w->vchild)) |
| 1281 return 0; | |
| 1282 | |
| 1283 #ifdef HAVE_SCROLLBARS | |
| 1284 if (!modeline && !NILP (w->scrollbar_on_left_p)) | |
| 442 | 1285 return window_scrollbar_width (w); |
| 428 | 1286 #endif |
| 1287 | |
| 442 | 1288 return 0; |
| 428 | 1289 } |
| 1290 | |
| 1291 int | |
| 442 | 1292 window_left_gutter_width (struct window *w, int modeline) |
| 1293 { | |
| 1294 return window_left_window_gutter_width (w, modeline); | |
| 1295 } | |
| 1296 | |
| 1297 static int | |
| 4932 | 1298 window_right_window_gutter_width (struct window *w, |
| 1299 int USED_IF_SCROLLBARS (modeline)) | |
| 442 | 1300 { |
| 1301 int gutter = 0; | |
| 428 | 1302 |
| 1303 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 1304 return 0; | |
| 1305 | |
| 1306 #ifdef HAVE_SCROLLBARS | |
| 1307 if (!modeline && NILP (w->scrollbar_on_left_p)) | |
| 1308 gutter += window_scrollbar_width (w); | |
| 1309 #endif | |
| 1310 | |
| 1311 if (window_needs_vertical_divider (w)) | |
| 1312 gutter += window_divider_width (w); | |
| 1313 | |
| 1314 return gutter; | |
| 1315 } | |
| 1316 | |
| 442 | 1317 int |
| 1318 window_right_gutter_width (struct window *w, int modeline) | |
| 1319 { | |
| 1320 return window_right_window_gutter_width (w, modeline); | |
| 1321 } | |
| 1322 | |
| 1323 static int | |
| 1324 window_pixel_height (struct window* w) | |
| 1325 { | |
| 1326 return WINDOW_HEIGHT (w); | |
| 1327 } | |
| 1328 | |
| 428 | 1329 |
| 1330 DEFUN ("windowp", Fwindowp, 1, 1, 0, /* | |
| 444 | 1331 Return t if OBJECT is a window. |
| 428 | 1332 */ |
| 444 | 1333 (object)) |
| 1334 { | |
| 1335 return WINDOWP (object) ? Qt : Qnil; | |
| 428 | 1336 } |
| 1337 | |
| 1338 DEFUN ("window-live-p", Fwindow_live_p, 1, 1, 0, /* | |
| 444 | 1339 Return t if OBJECT is a window which is currently visible. |
| 428 | 1340 */ |
| 444 | 1341 (object)) |
| 1342 { | |
| 1343 return WINDOWP (object) && WINDOW_LIVE_P (XWINDOW (object)) | |
| 1344 ? Qt : Qnil; | |
| 428 | 1345 } |
| 1346 | |
| 1347 DEFUN ("selected-window", Fselected_window, 0, 1, 0, /* | |
| 1348 Return the window that the cursor now appears in and commands apply to. | |
| 1349 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
| 1350 the selected window used by that frame. If CON-DEV-OR-FRAME is a device, | |
| 1351 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
| 1352 is a console, the selected frame on that console's selected device will | |
| 1353 be used. Otherwise, the selected frame is used. | |
| 1354 */ | |
| 1355 (con_dev_or_frame)) | |
| 1356 { | |
| 1357 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
| 1358 return Qnil; /* happens at startup */ | |
| 1359 | |
| 1360 { | |
| 1361 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
| 1362 return FRAME_SELECTED_WINDOW (f); | |
| 1363 } | |
| 1364 } | |
| 1365 | |
| 1366 DEFUN ("last-nonminibuf-window", Flast_nonminibuf_window, 0, 1, 0, /* | |
| 1367 Return the last selected window that is not a minibuffer window. | |
| 1368 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, | |
| 1369 return the last non-minibuffer window used by that frame. If | |
| 1370 CON-DEV-OR-FRAME is a device, then the selected frame on that device | |
| 1371 will be used. If CON-DEV-OR-FRAME is a console, the selected frame on | |
| 1372 that console's selected device will be used. Otherwise, the selected | |
| 1373 frame is used. | |
| 1374 */ | |
| 1375 (con_dev_or_frame)) | |
| 1376 { | |
| 1377 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
| 1378 return Qnil; /* happens at startup */ | |
| 1379 | |
| 1380 { | |
| 1381 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
| 1382 return FRAME_LAST_NONMINIBUF_WINDOW (f); | |
| 1383 } | |
| 1384 } | |
| 1385 | |
| 1386 DEFUN ("minibuffer-window", Fminibuffer_window, 0, 1, 0, /* | |
| 1387 Return the window used now for minibuffers. | |
| 1388 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
| 1389 the minibuffer window used by that frame. If CON-DEV-OR-FRAME is a device, | |
| 1390 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
| 1391 is a console, the selected frame on that console's selected device will | |
| 1392 be used. Otherwise, the selected frame is used. | |
| 1393 */ | |
| 1394 (con_dev_or_frame)) | |
| 1395 { | |
| 1396 return FRAME_MINIBUF_WINDOW (decode_frame_or_selected (con_dev_or_frame)); | |
| 1397 } | |
| 1398 | |
| 438 | 1399 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, 0, 1, 0, /* |
| 428 | 1400 Return non-nil if WINDOW is a minibuffer window. |
| 1401 */ | |
| 1402 (window)) | |
| 1403 { | |
| 1404 return MINI_WINDOW_P (decode_window (window)) ? Qt : Qnil; | |
| 1405 } | |
| 1406 | |
| 1407 DEFUN ("window-first-hchild", Fwindow_first_hchild, 1, 1, 0, /* | |
| 1408 Return the first horizontal child of WINDOW, or nil. | |
| 1409 */ | |
| 1410 (window)) | |
| 1411 { | |
| 1412 return decode_window (window)->hchild; | |
| 1413 } | |
| 1414 | |
| 1415 DEFUN ("window-first-vchild", Fwindow_first_vchild, 1, 1, 0, /* | |
| 1416 Return the first vertical child of WINDOW, or nil. | |
| 1417 */ | |
| 1418 (window)) | |
| 1419 { | |
| 1420 return decode_window (window)->vchild; | |
| 1421 } | |
| 1422 | |
| 1423 DEFUN ("window-next-child", Fwindow_next_child, 1, 1, 0, /* | |
| 1424 Return the next window on the same level as WINDOW, or nil. | |
| 1425 */ | |
| 1426 (window)) | |
| 1427 { | |
| 1428 return decode_window (window)->next; | |
| 1429 } | |
| 1430 | |
| 1431 DEFUN ("window-previous-child", Fwindow_previous_child, 1, 1, 0, /* | |
| 1432 Return the previous window on the same level as WINDOW, or nil. | |
| 1433 */ | |
| 1434 (window)) | |
| 1435 { | |
| 1436 return decode_window (window)->prev; | |
| 1437 } | |
| 1438 | |
| 1439 DEFUN ("window-parent", Fwindow_parent, 1, 1, 0, /* | |
| 1440 Return the parent of WINDOW, or nil. | |
| 1441 */ | |
| 1442 (window)) | |
| 1443 { | |
| 1444 return decode_window (window)->parent; | |
| 1445 } | |
| 1446 | |
| 1447 DEFUN ("window-lowest-p", Fwindow_lowest_p, 1, 1, 0, /* | |
| 1448 Return non-nil if WINDOW is along the bottom of its frame. | |
| 1449 */ | |
| 1450 (window)) | |
| 1451 { | |
| 1452 return window_is_lowest (decode_window (window)) ? Qt : Qnil; | |
| 1453 } | |
| 1454 | |
| 1455 DEFUN ("window-highest-p", Fwindow_highest_p, 1, 1, 0, /* | |
| 1456 Return non-nil if WINDOW is along the top of its frame. | |
| 1457 */ | |
| 1458 (window)) | |
| 1459 { | |
| 1460 return window_is_highest (decode_window (window)) ? Qt : Qnil; | |
| 1461 } | |
| 1462 | |
| 1463 DEFUN ("window-leftmost-p", Fwindow_leftmost_p, 1, 1, 0, /* | |
| 1464 Return non-nil if WINDOW is along the left edge of its frame. | |
| 1465 */ | |
| 1466 (window)) | |
| 1467 { | |
| 1468 return window_is_leftmost (decode_window (window)) ? Qt : Qnil; | |
| 1469 } | |
| 1470 | |
| 1471 DEFUN ("window-rightmost-p", Fwindow_rightmost_p, 1, 1, 0, /* | |
| 1472 Return non-nil if WINDOW is along the right edge of its frame. | |
| 1473 */ | |
| 1474 (window)) | |
| 1475 { | |
| 1476 return window_is_rightmost (decode_window (window)) ? Qt : Qnil; | |
| 1477 } | |
| 1478 | |
| 1708 | 1479 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, 0, 3, 0, /* |
| 1480 Returns t if position POS is currently on the frame in WINDOW. | |
| 428 | 1481 Returns nil if that position is scrolled vertically out of view. |
| 1708 | 1482 If a character is only partially visible, nil is returned, unless the |
| 1483 optional argument PARTIALLY is non-nil. | |
| 428 | 1484 POS defaults to point in WINDOW's buffer; WINDOW, to the selected window. |
| 1485 */ | |
| 1708 | 1486 (pos, window, partially)) |
| 428 | 1487 { |
| 1488 struct window *w = decode_window (window); | |
| 665 | 1489 Charbpos top = marker_position (w->start[CURRENT_DISP]); |
| 1490 Charbpos posint; | |
| 428 | 1491 struct buffer *buf = XBUFFER (w->buffer); |
| 1492 | |
| 1493 if (NILP (pos)) | |
| 1494 posint = BUF_PT (buf); | |
| 1495 else | |
| 1496 { | |
| 1497 CHECK_INT_COERCE_MARKER (pos); | |
| 1498 posint = XINT (pos); | |
| 1499 } | |
| 1500 | |
| 1501 if (posint < top || posint > BUF_ZV (buf)) | |
| 1502 return Qnil; | |
| 1503 | |
| 1504 /* w->start can be out of range. If it is, do something reasonable. */ | |
| 1505 if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
| 1506 return Qnil; | |
| 1507 | |
| 1708 | 1508 return point_would_be_visible (w, top, posint, !NILP (partially)) |
| 1509 ? Qt : Qnil; | |
| 428 | 1510 } |
| 1511 | |
| 1512 | |
| 1513 struct window * | |
| 1514 decode_window (Lisp_Object window) | |
| 1515 { | |
| 1516 if (NILP (window)) | |
| 1517 return XWINDOW (Fselected_window (Qnil)); | |
| 1518 | |
| 1519 CHECK_LIVE_WINDOW (window); | |
| 1520 return XWINDOW (window); | |
| 1521 } | |
| 1522 | |
| 872 | 1523 int |
| 1524 window_live_p (struct window *w) | |
| 1525 { | |
| 1526 return WINDOW_LIVE_P (w); | |
| 1527 } | |
| 1528 | |
| 1529 Lisp_Object | |
| 1530 window_frame (struct window *w) | |
| 1531 { | |
| 1532 return WINDOW_FRAME (w); | |
| 1533 } | |
| 1534 | |
| 1535 Lisp_Object | |
| 1536 window_buffer (struct window *w) | |
| 1537 { | |
| 1538 return WINDOW_BUFFER (w); | |
| 1539 } | |
| 1540 | |
| 428 | 1541 DEFUN ("window-buffer", Fwindow_buffer, 0, 1, 0, /* |
| 1542 Return the buffer that WINDOW is displaying. | |
| 1543 */ | |
| 1544 (window)) | |
| 1545 { | |
| 1546 return decode_window (window)->buffer; | |
| 1547 } | |
| 1548 | |
| 1549 DEFUN ("window-frame", Fwindow_frame, 0, 1, 0, /* | |
| 1550 Return the frame that window WINDOW is on. | |
| 1551 */ | |
| 1552 (window)) | |
| 1553 { | |
| 1554 return decode_window (window)->frame; | |
| 1555 } | |
| 1556 | |
| 1557 DEFUN ("window-height", Fwindow_height, 0, 1, 0, /* | |
| 1558 Return the number of default lines in WINDOW. | |
| 1559 This actually works by dividing the window's pixel height (including | |
| 1560 the modeline and horizontal scrollbar, if any) by the height of the | |
| 1561 default font; therefore, the number of displayed lines will probably | |
| 1562 be different. | |
| 1563 Use `window-height' to get consistent results in geometry calculations. | |
| 1564 Use `window-displayed-height' to get the actual number of lines | |
| 1565 currently displayed in a window. | |
| 442 | 1566 |
| 1567 The names are somewhat confusing; here's a table to help out: | |
| 1568 | |
| 1569 width height | |
| 1570 ------------------------------------------------------------------------- | |
| 1571 w/o gutters | |
| 1572 (rows/columns) window-width window-text-area-height | |
| 1573 (pixels) window-text-area-pixel-width window-text-area-pixel-height | |
| 1574 | |
| 1575 with gutters | |
| 1576 (rows/columns) window-full-width window-height | |
| 1577 (pixels) window-pixel-width window-pixel-height | |
| 1578 | |
| 1579 actually displayed | |
| 1580 (rows/columns) ---- window-displayed-height | |
| 1581 (pixels) ---- window-displayed-text-pixel-height | |
| 428 | 1582 */ |
| 1583 (window)) | |
| 1584 { | |
| 1585 return make_int (window_char_height (decode_window (window), 1)); | |
| 1586 } | |
| 1587 | |
| 1588 DEFUN ("window-displayed-height", Fwindow_displayed_height, 0, 1, 0, /* | |
| 1589 Return the number of lines currently displayed in WINDOW. | |
| 1590 This counts the actual number of lines displayed in WINDOW | |
| 1591 \(as opposed to `window-height'). The modeline and horizontal | |
| 1592 scrollbar do not count as lines. If there is some blank space | |
| 1593 between the end of the buffer and the end of the window, this | |
| 1594 function pretends that there are lines of text in the default | |
| 1595 font there. | |
| 1596 */ | |
| 1597 (window)) | |
| 1598 { | |
| 1599 return make_int (window_displayed_height (decode_window (window))); | |
| 1600 } | |
| 1601 | |
| 1602 DEFUN ("window-pixel-height", Fwindow_pixel_height, 0, 1, 0, /* | |
| 1603 Return the height of WINDOW in pixels. Defaults to current window. | |
| 1604 This includes the window's modeline and horizontal scrollbar (if any). | |
| 1605 */ | |
| 1606 (window)) | |
| 1607 { | |
| 442 | 1608 return make_int (window_pixel_height (decode_window (window))); |
| 1609 } | |
| 1610 | |
| 1611 DEFUN ("window-text-area-height", Fwindow_text_area_height, 0, 1, 0, /* | |
| 1612 Return the number of default lines in the text area of WINDOW. | |
| 1613 This actually works by dividing the window's text area pixel height (i.e. | |
| 1614 excluding the modeline and horizontal scrollbar, if any) by the height of the | |
| 1615 default font; therefore, the number of displayed lines will probably | |
| 1616 be different. | |
| 1617 See also `window-height' and `window-displayed-height'. | |
| 1618 */ | |
| 1619 (window)) | |
| 1620 { | |
| 1621 return make_int (window_char_height (decode_window (window), 0)); | |
| 428 | 1622 } |
| 1623 | |
| 1624 DEFUN ("window-text-area-pixel-height", | |
| 1625 Fwindow_text_area_pixel_height, 0, 1, 0, /* | |
| 1626 Return the height in pixels of the text-displaying portion of WINDOW. | |
| 1627 Unlike `window-pixel-height', the space occupied by the modeline and | |
| 1628 horizontal scrollbar, if any, is not counted. | |
| 1629 */ | |
| 1630 (window)) | |
| 1631 { | |
| 1632 struct window *w = decode_window (window); | |
| 1633 | |
| 1634 return make_int (WINDOW_TEXT_HEIGHT (w)); | |
| 1635 } | |
| 1636 | |
| 1637 DEFUN ("window-displayed-text-pixel-height", | |
| 1638 Fwindow_displayed_text_pixel_height, 0, 2, 0, /* | |
| 1639 Return the height in pixels of the text displayed in WINDOW. | |
| 1640 Unlike `window-text-area-pixel-height', any blank space below the | |
| 1641 end of the buffer is not included. If optional argument NOCLIPPED | |
| 1642 is non-nil, do not include space occupied by clipped lines. | |
| 1643 */ | |
| 1644 (window, noclipped)) | |
| 1645 { | |
| 1646 struct window *w; | |
| 665 | 1647 Charbpos start, eobuf; |
| 428 | 1648 int defheight; |
| 1649 int hlimit, height, prev_height = -1; | |
| 1650 int line; | |
| 1651 int elt, nelt, i; | |
| 1652 int needed; | |
| 1653 line_start_cache_dynarr *cache; | |
| 1654 | |
| 1655 if (NILP (window)) | |
| 1656 window = Fselected_window (Qnil); | |
| 1657 | |
| 1658 CHECK_LIVE_WINDOW (window); | |
| 1659 w = XWINDOW (window); | |
| 1660 | |
| 1661 start = marker_position (w->start[CURRENT_DISP]); | |
| 1662 hlimit = WINDOW_TEXT_HEIGHT (w); | |
| 1663 eobuf = BUF_ZV (XBUFFER (w->buffer)); | |
| 1664 | |
| 1665 default_face_height_and_width (window, &defheight, NULL); | |
| 1666 | |
| 1667 /* guess lines needed in line start cache + a few extra */ | |
| 1668 needed = (hlimit + defheight-1) / defheight + 3; | |
| 1669 | |
| 1670 while (1) { | |
| 1671 elt = point_in_line_start_cache (w, start, needed); | |
| 1672 assert (elt >= 0); /* in the cache */ | |
| 1673 | |
| 1674 cache = w->line_start_cache; | |
| 1675 nelt = Dynarr_length (cache); | |
| 1676 | |
| 1677 height = 0; | |
| 1678 for (i = elt; i < nelt; i++) { | |
| 1679 line = Dynarr_atp (cache, i)->height; | |
| 1680 | |
| 1681 if (height + line > hlimit) | |
| 1682 return make_int (!NILP (noclipped) ? height : hlimit); | |
| 1683 | |
| 1684 height += line; | |
| 1685 | |
| 1686 if (height == hlimit || Dynarr_atp (cache, i)->end >= eobuf) | |
| 1687 return make_int (height); | |
| 1688 } | |
| 1689 | |
| 1690 /* get here => need more cache lines. try again. */ | |
| 1691 assert(height > prev_height); /* progress? */ | |
| 1692 prev_height = height; | |
| 1693 | |
| 1694 needed += ((hlimit - height)*(nelt - elt) + height-1)/height + 3; | |
| 1695 } | |
| 1696 | |
| 1204 | 1697 RETURN_NOT_REACHED(make_int (0)); /* shut up compiler */ |
| 428 | 1698 } |
| 1699 | |
| 1700 DEFUN ("window-width", Fwindow_width, 0, 1, 0, /* | |
| 1701 Return the number of display columns in WINDOW. | |
| 442 | 1702 This is the width that is usable columns available for text in WINDOW, |
| 1703 and does not include vertical scrollbars, dividers, or the like. See also | |
| 1704 `window-full-width' and `window-height'. | |
| 428 | 1705 */ |
| 1706 (window)) | |
| 1707 { | |
| 1708 return make_int (window_char_width (decode_window (window), 0)); | |
| 1709 } | |
| 1710 | |
| 442 | 1711 DEFUN ("window-full-width", Fwindow_full_width, 0, 1, 0, /* |
| 1712 Return the total number of columns in WINDOW. | |
| 1713 This is like `window-width' but includes vertical scrollbars, dividers, | |
| 1714 etc. | |
| 1715 */ | |
| 1716 (window)) | |
| 1717 { | |
| 1718 return make_int (window_char_width (decode_window (window), 1)); | |
| 1719 } | |
| 1720 | |
| 428 | 1721 DEFUN ("window-pixel-width", Fwindow_pixel_width, 0, 1, 0, /* |
| 1722 Return the width of WINDOW in pixels. Defaults to current window. | |
| 1723 */ | |
| 1724 (window)) | |
| 1725 { | |
| 1726 return make_int (decode_window (window)->pixel_width); | |
| 1727 } | |
| 1728 | |
| 1729 DEFUN ("window-text-area-pixel-width", | |
| 1730 Fwindow_text_area_pixel_width, 0, 1, 0, /* | |
| 1731 Return the width in pixels of the text-displaying portion of WINDOW. | |
| 1732 Unlike `window-pixel-width', the space occupied by the vertical | |
| 1733 scrollbar or divider, if any, is not counted. | |
| 1734 */ | |
| 1735 (window)) | |
| 1736 { | |
| 1737 struct window *w = decode_window (window); | |
| 1738 | |
| 1739 return make_int (WINDOW_TEXT_WIDTH (w)); | |
| 1740 } | |
| 1741 | |
| 1742 DEFUN ("window-hscroll", Fwindow_hscroll, 0, 1, 0, /* | |
| 1743 Return the number of columns by which WINDOW is scrolled from left margin. | |
| 1744 */ | |
| 1745 (window)) | |
| 1746 { | |
| 1747 return make_int (decode_window (window)->hscroll); | |
| 1748 } | |
| 1749 | |
| 1750 DEFUN ("modeline-hscroll", Fmodeline_hscroll, 0, 1, 0, /* | |
| 442 | 1751 Return the horizontal scrolling amount of WINDOW's modeline. |
| 438 | 1752 If the window has no modeline, return nil. |
| 428 | 1753 */ |
| 1754 (window)) | |
| 1755 { | |
| 1756 struct window *w = decode_window (window); | |
| 1757 | |
| 438 | 1758 return (WINDOW_HAS_MODELINE_P (w)) ? make_int ((int) w->modeline_hscroll) : |
| 1759 Qnil; | |
| 428 | 1760 } |
| 1761 | |
| 1762 DEFUN ("set-modeline-hscroll", Fset_modeline_hscroll, 2, 2, 0, /* | |
| 442 | 1763 Set the horizontal scrolling amount of WINDOW's modeline to NCOL. |
| 438 | 1764 If NCOL is negative, it will silently be forced to 0. |
| 1765 If the window has no modeline, return nil. Otherwise, return the actual | |
| 1766 value that was set. | |
| 428 | 1767 */ |
| 1768 (window, ncol)) | |
| 1769 { | |
| 1770 struct window *w = decode_window (window); | |
| 1771 | |
| 1772 if (WINDOW_HAS_MODELINE_P (w)) | |
| 1773 { | |
| 438 | 1774 Charcount ncols; |
| 1775 | |
| 428 | 1776 CHECK_INT (ncol); |
| 438 | 1777 ncols = (XINT (ncol) <= 0) ? 0 : (Charcount) XINT (ncol); |
| 1778 if (ncols != w->modeline_hscroll) | |
| 1779 { | |
| 1780 MARK_MODELINE_CHANGED; | |
| 1781 w->modeline_hscroll = ncols; | |
| 1782 } | |
| 1783 return make_int ((int) ncols); | |
| 428 | 1784 } |
| 438 | 1785 |
| 428 | 1786 return Qnil; |
| 1787 } | |
| 1788 | |
| 1789 DEFUN ("set-window-hscroll", Fset_window_hscroll, 2, 2, 0, /* | |
| 1790 Set number of columns WINDOW is scrolled from left margin to NCOL. | |
| 1791 NCOL should be zero or positive. | |
| 1792 */ | |
| 1793 (window, ncol)) | |
| 1794 { | |
| 1795 struct window *w; | |
| 1796 int ncols; | |
| 1797 | |
| 1798 CHECK_INT (ncol); | |
| 1799 ncols = XINT (ncol); | |
| 1800 if (ncols < 0) ncols = 0; | |
| 1801 w = decode_window (window); | |
| 1802 if (w->hscroll != ncols) | |
| 1803 MARK_CLIP_CHANGED; /* FSF marks differently but we aren't FSF. */ | |
| 1804 w->hscroll = ncols; | |
| 1805 return ncol; | |
| 1806 } | |
| 1807 | |
| 1808 DEFUN ("window-pixel-edges", Fwindow_pixel_edges, 0, 1, 0, /* | |
| 1809 Return a list of the pixel edge coordinates of WINDOW. | |
| 444 | 1810 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
| 1811 all relative to 0, 0 at the top left corner of WINDOW's frame. | |
| 1812 The frame toolbars, menubars and gutters are considered to be outside | |
| 1813 of this area, while the scrollbars are considered to be inside. | |
| 428 | 1814 */ |
| 1815 (window)) | |
| 1816 { | |
| 1817 struct window *w = decode_window (window); | |
| 1818 struct frame *f = XFRAME (w->frame); | |
| 1819 | |
| 442 | 1820 int left = |
| 1821 w->pixel_left - FRAME_LEFT_BORDER_END (f) - FRAME_LEFT_GUTTER_BOUNDS (f); | |
| 1822 int top = | |
| 1823 w->pixel_top - FRAME_TOP_BORDER_END (f) - FRAME_TOP_GUTTER_BOUNDS (f); | |
| 428 | 1824 |
| 1825 return list4 (make_int (left), | |
| 1826 make_int (top), | |
| 1827 make_int (left + w->pixel_width), | |
| 1828 make_int (top + w->pixel_height)); | |
| 1829 } | |
| 1830 | |
| 1831 DEFUN ("window-text-area-pixel-edges", | |
| 1832 Fwindow_text_area_pixel_edges, 0, 1, 0, /* | |
| 1833 Return a list of the pixel edge coordinates of the text area of WINDOW. | |
| 444 | 1834 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
| 1835 all relative to 0, 0 at the top left corner of the total area allocated | |
| 1836 to the window, which includes the scrollbars. | |
| 428 | 1837 */ |
| 1838 (window)) | |
| 1839 { | |
| 1840 struct window *w = decode_window (window); | |
| 1841 | |
| 1842 int left = window_left_gutter_width (w, /* modeline = */ 0); | |
| 1843 int top = window_top_gutter_height (w); | |
| 1844 int right = WINDOW_WIDTH (w) - window_right_gutter_width (w, 0); | |
| 1845 int bottom = WINDOW_HEIGHT (w) - window_bottom_gutter_height (w); | |
| 1846 | |
| 1847 return list4 (make_int (left), | |
| 1848 make_int (top), | |
| 1849 make_int (right), | |
| 1850 make_int (bottom)); | |
| 1851 } | |
| 1852 | |
| 1853 DEFUN ("window-point", Fwindow_point, 0, 1, 0, /* | |
| 1854 Return current value of point in WINDOW. | |
| 442 | 1855 For a non-selected window, this is the value point would have |
| 428 | 1856 if that window were selected. |
| 1857 | |
| 1858 Note that, when WINDOW is the selected window and its buffer | |
| 1859 is also currently selected, the value returned is the same as (point). | |
| 1860 It would be more strictly correct to return the `top-level' value | |
| 1861 of point, outside of any save-excursion forms. | |
| 444 | 1862 But that value is hard to find. |
| 428 | 1863 */ |
| 1864 (window)) | |
| 1865 { | |
| 1866 struct window *w = decode_window (window); | |
| 1867 | |
| 1868 /* The special check for current buffer is necessary for this | |
| 1869 function to work as defined when called within an excursion. */ | |
| 1870 if (w == XWINDOW (Fselected_window (XFRAME (w->frame)->device)) | |
| 1871 && current_buffer == XBUFFER (w->buffer)) | |
| 1872 return Fpoint (Qnil); | |
| 1873 return Fmarker_position (w->pointm[CURRENT_DISP]); | |
| 1874 } | |
| 1875 | |
| 1876 DEFUN ("window-start", Fwindow_start, 0, 1, 0, /* | |
| 1877 Return position at which display currently starts in WINDOW. | |
| 1878 This is updated by redisplay or by calling `set-window-start'. | |
| 1879 */ | |
| 1880 (window)) | |
| 1881 { | |
| 1882 return Fmarker_position (decode_window (window)->start[CURRENT_DISP]); | |
| 1883 } | |
| 1884 | |
| 1885 DEFUN ("window-end", Fwindow_end, 0, 2, 0, /* | |
| 1886 Return position at which display currently ends in WINDOW. | |
| 1887 This is updated by redisplay, when it runs to completion. | |
| 444 | 1888 Simply changing the buffer text or setting `window-start' does not |
| 1889 update this value. WINDOW defaults to the selected window. | |
| 1890 | |
| 1891 If optional arg GUARANTEE is non-nil, the return value is guaranteed | |
| 1892 to be the same value as this function would return at the end of the | |
| 1893 next full redisplay assuming nothing else changes in the meantime. | |
| 1894 This function is potentially much slower with this flag set. | |
| 428 | 1895 */ |
| 1896 (window, guarantee)) | |
| 1897 { | |
| 1898 struct window *w = decode_window (window); | |
| 1899 | |
| 1900 if (NILP (guarantee)) | |
| 1901 { | |
| 1902 Lisp_Object buf; | |
| 1903 buf = w->buffer; | |
| 1904 CHECK_BUFFER (buf); | |
| 1905 return make_int (BUF_Z (XBUFFER (buf)) - w->window_end_pos[CURRENT_DISP]); | |
| 1906 } | |
| 1907 else | |
| 1908 { | |
| 665 | 1909 Charbpos startp = marker_position (w->start[CURRENT_DISP]); |
| 428 | 1910 return make_int (end_of_last_line (w, startp)); |
| 1911 } | |
| 1912 } | |
| 1913 | |
| 442 | 1914 DEFUN ("window-last-line-visible-height", Fwindow_last_line_visible_height, 0, 1, 0, /* |
| 1915 Return pixel height of visible part of last window line if it is clipped. | |
| 1916 If the last line is not clipped, return nil. | |
| 1917 */ | |
| 1918 (window)) | |
| 1919 { | |
| 1920 struct window *w = decode_window (window); | |
| 1921 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 1922 int num_lines = Dynarr_length (dla); | |
| 1923 struct display_line *dl; | |
| 1924 | |
| 1925 /* No lines - no clipped lines */ | |
| 4967 | 1926 if (num_lines == 0 || (num_lines == 1 && Dynarr_begin (dla)->modeline)) |
| 442 | 1927 return Qnil; |
| 1928 | |
| 1929 dl = Dynarr_atp (dla, num_lines - 1); | |
| 1930 if (dl->clip == 0) | |
| 1931 return Qnil; | |
| 1932 | |
| 1933 return make_int (dl->ascent + dl->descent - dl->clip); | |
| 1934 } | |
| 1935 | |
| 428 | 1936 DEFUN ("set-window-point", Fset_window_point, 2, 2, 0, /* |
| 1937 Make point value in WINDOW be at position POS in WINDOW's buffer. | |
| 1161 | 1938 If WINDOW is the selected window, and window's buffer is the current |
| 1939 buffer, this actually changes the buffer's point instead of the window's | |
| 1940 point. (The equivalence of the selected window's point with its buffer's | |
| 1941 point is maintained throughout XEmacs. However, enforcing the additional | |
| 1942 restriction on the current buffer is "bug compatible" with FSF and is | |
| 1943 perhaps more logical.) | |
| 428 | 1944 */ |
| 1945 (window, pos)) | |
| 1946 { | |
| 1947 struct window *w = decode_window (window); | |
| 1948 | |
| 1949 CHECK_INT_COERCE_MARKER (pos); | |
| 1161 | 1950 |
| 844 | 1951 /* Don't dereference selected-window because there may not |
| 1952 be one -- e.g. at startup */ | |
| 1161 | 1953 if (EQ (wrap_window (w), Fselected_window (Qnil)) |
| 1954 && EQ (w->buffer, Fcurrent_buffer ())) | |
| 1955 Fgoto_char (pos, Qnil); | |
| 428 | 1956 else |
| 1957 set_marker_restricted (w->pointm[CURRENT_DISP], pos, w->buffer); | |
| 1958 | |
| 1959 MARK_POINT_CHANGED; | |
| 1960 return pos; | |
| 1961 } | |
| 1962 | |
| 1963 DEFUN ("set-window-start", Fset_window_start, 2, 3, 0, /* | |
| 1964 Make display in WINDOW start at position POS in WINDOW's buffer. | |
| 1965 Optional third arg NOFORCE non-nil inhibits next redisplay | |
| 1966 from overriding motion of point in order to display at this exact start. | |
| 1967 */ | |
| 1968 (window, pos, noforce)) | |
| 1969 { | |
| 1970 struct window *w = decode_window (window); | |
| 1971 | |
| 1972 CHECK_INT_COERCE_MARKER (pos); | |
| 1973 set_marker_restricted (w->start[CURRENT_DISP], pos, w->buffer); | |
| 1974 /* this is not right, but much easier than doing what is right. */ | |
| 1975 /* w->start_at_line_beg = 0; */ | |
| 1976 /* WTF is the above supposed to mean? GE */ | |
| 1977 w->start_at_line_beg = beginning_of_line_p (XBUFFER (w->buffer), | |
| 1978 marker_position (w->start[CURRENT_DISP])); | |
| 1979 if (NILP (noforce)) | |
| 1980 w->force_start = 1; | |
| 1981 w->redo_modeline = 1; | |
| 1982 SET_LAST_MODIFIED (w, 0); | |
| 1983 SET_LAST_FACECHANGE (w); | |
| 1984 | |
| 1985 MARK_WINDOWS_CHANGED (w); | |
| 1986 | |
| 1987 return pos; | |
| 1988 } | |
| 1989 | |
| 1990 DEFUN ("window-dedicated-p", Fwindow_dedicated_p, 1, 1, 0, /* | |
| 1991 Return WINDOW's dedicated object, usually t or nil. | |
| 1992 See also `set-window-dedicated-p'. | |
| 1993 */ | |
| 1994 (window)) | |
| 1995 { | |
| 1996 return decode_window (window)->dedicated; | |
| 1997 } | |
| 1998 | |
| 1999 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, 2, 2, 0, /* | |
| 2000 Control whether WINDOW is dedicated to the buffer it displays. | |
| 2001 If it is dedicated, Emacs will not automatically change | |
| 2002 which buffer appears in it. | |
| 2003 The second argument is the new value for the dedication flag; | |
| 2004 non-nil means yes. | |
| 2005 */ | |
| 2006 (window, arg)) | |
| 2007 { | |
| 2008 struct window *w = decode_window (window); | |
| 2009 | |
| 2010 w->dedicated = NILP (arg) ? Qnil : Qt; | |
| 2011 | |
| 2012 return w->dedicated; | |
| 2013 } | |
| 2014 | |
| 2015 /* FSFmacs has window-display-table here. We have display table as a | |
| 2016 specifier. */ | |
| 2017 | |
| 2018 | |
| 2019 /* Record info on buffer window w is displaying | |
| 2020 when it is about to cease to display that buffer. */ | |
| 2021 static void | |
| 2022 unshow_buffer (struct window *w) | |
| 2023 { | |
| 2024 Lisp_Object buf = w->buffer; | |
| 844 | 2025 struct buffer *b = XBUFFER (buf); |
| 2026 | |
| 2027 if (b != XMARKER (w->pointm[CURRENT_DISP])->buffer) | |
| 2500 | 2028 ABORT (); |
| 428 | 2029 |
| 2030 /* FSF disables this check, so I'll do it too. I hope it won't | |
| 2031 break things. --ben */ | |
| 2032 #if 0 | |
| 2033 if (w == XWINDOW (Fselected_window (Qnil)) | |
| 2034 || ! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
| 2035 /* Do this except when the selected window's buffer | |
| 2036 is being removed from some other window. */ | |
| 2037 #endif | |
| 2038 /* last_window_start records the start position that this buffer | |
| 2039 had in the last window to be disconnected from it. | |
| 2040 Now that this statement is unconditional, | |
| 2041 it is possible for the buffer to be displayed in the | |
| 2042 selected window, while last_window_start reflects another | |
| 2043 window which was recently showing the same buffer. | |
| 2044 Some people might say that might be a good thing. Let's see. */ | |
| 2045 XBUFFER (buf)->last_window_start = | |
| 2046 marker_position (w->start[CURRENT_DISP]); | |
| 2047 | |
| 2048 /* Point in the selected window's buffer | |
| 2049 is actually stored in that buffer, and the window's pointm isn't used. | |
| 2050 So don't clobber point in that buffer. */ | |
| 2051 if (! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
| 844 | 2052 BUF_SET_PT (b, |
| 2053 charbpos_clip_to_bounds | |
| 2054 (BUF_BEGV (b), | |
| 2055 marker_position (w->pointm[CURRENT_DISP]), | |
| 2056 BUF_ZV (b))); | |
| 2057 | |
| 2058 { | |
| 2059 Lisp_Object marker = Fgethash (buf, w->saved_point_cache, Qnil); | |
| 2060 int selected = EQ (wrap_window (w), Fselected_window (Qnil)); | |
| 2061 | |
| 2062 if (NILP (marker)) | |
| 2063 { | |
| 2064 marker = Fmake_marker (); | |
| 2065 Fputhash (buf, marker, w->saved_point_cache); | |
| 2066 } | |
| 2067 Fset_marker (marker, | |
| 2068 selected ? make_int (BUF_PT (b)) : w->pointm[CURRENT_DISP], | |
| 2069 buf); | |
| 2070 | |
| 2071 marker = Fgethash (buf, w->saved_last_window_start_cache, Qnil); | |
| 2072 | |
| 2073 if (NILP (marker)) | |
| 2074 { | |
| 2075 marker = Fmake_marker (); | |
| 2076 Fputhash (buf, marker, w->saved_last_window_start_cache); | |
| 2077 } | |
| 2078 Fset_marker (marker, w->start[CURRENT_DISP], buf); | |
| 2079 } | |
| 428 | 2080 } |
| 2081 | |
| 2082 /* Put REPLACEMENT into the window structure in place of OLD. */ | |
| 2083 static void | |
| 2084 replace_window (Lisp_Object old, Lisp_Object replacement) | |
| 2085 { | |
| 2086 Lisp_Object tem; | |
| 2087 struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
| 2088 | |
| 2089 /* If OLD is its frame's root_window, then replacement is the new | |
| 2090 root_window for that frame. */ | |
| 2091 | |
| 2092 if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) | |
| 2093 FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; | |
| 2094 | |
| 2095 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
| 2096 WINDOW_TOP (p) = WINDOW_TOP (o); | |
| 2097 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
| 2098 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
| 2099 | |
| 2100 p->next = tem = o->next; | |
| 2101 if (!NILP (tem)) | |
| 2102 XWINDOW (tem)->prev = replacement; | |
| 2103 | |
| 2104 p->prev = tem = o->prev; | |
| 2105 if (!NILP (tem)) | |
| 2106 XWINDOW (tem)->next = replacement; | |
| 2107 | |
| 2108 p->parent = tem = o->parent; | |
| 2109 if (!NILP (tem)) | |
| 2110 { | |
| 2111 if (EQ (XWINDOW (tem)->vchild, old)) | |
| 2112 XWINDOW (tem)->vchild = replacement; | |
| 2113 if (EQ (XWINDOW (tem)->hchild, old)) | |
| 2114 XWINDOW (tem)->hchild = replacement; | |
| 2115 } | |
| 2116 | |
| 2117 /* #### Here, if replacement is a vertical combination | |
| 2118 and so is its new parent, we should make replacement's | |
| 2119 children be children of that parent instead. */ | |
| 442 | 2120 |
| 2121 ERROR_CHECK_SUBWINDOW_CACHE (p); | |
| 2122 } | |
| 2123 | |
| 2124 static void | |
| 2125 window_unmap_subwindows (struct window* w) | |
| 2126 { | |
| 2127 assert (!NILP (w->subwindow_instance_cache)); | |
| 2128 elisp_maphash (unmap_subwindow_instance_cache_mapper, | |
| 2129 w->subwindow_instance_cache, (void*)1); | |
| 428 | 2130 } |
| 2131 | |
| 2132 /* we're deleting W; set the structure of W to indicate this. */ | |
| 2133 | |
| 2134 static void | |
| 2135 mark_window_as_deleted (struct window *w) | |
| 2136 { | |
| 442 | 2137 /* The window instance cache is going away now, so need to get the |
| 2138 cachels reset by redisplay. */ | |
| 2139 MARK_FRAME_SUBWINDOWS_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
| 2140 | |
| 2141 /* The cache is going away. If we leave unmapping to | |
| 2142 reset_subwindow_cachels then we get in a situation where the | |
| 2143 domain (the window) has been deleted but we still need access to | |
| 2144 its attributes in order to unmap windows properly. Since the | |
| 2145 subwindows are going to get GC'd anyway as a result of the domain | |
| 2146 going away, it is safer to just unmap them all while we know the | |
| 2147 domain is still valid. */ | |
| 2148 ERROR_CHECK_SUBWINDOW_CACHE (w); | |
| 2149 window_unmap_subwindows (w); | |
| 2150 | |
| 617 | 2151 /* Free the extra data structures attached to windows immediately so |
| 2152 they don't sit around consuming excess space. They will be | |
| 2153 reinitialized by the window-configuration code as necessary. */ | |
| 2154 finalize_window ((void *) w, 0); | |
| 2155 | |
| 1149 | 2156 /* Nobody should be accessing anything in this object any more, |
| 618 | 2157 and making them Qnil allows for better GC'ing in case a pointer |
| 2158 to the dead window continues to hang around. Zero all other | |
| 2159 structs in case someone tries to access something through them. | |
| 2160 | |
| 2161 (So, in point of fact, we zero out all of the "saved" slots, | |
| 2162 which are obviously restored from the window config, plus the | |
| 2163 slots which were already zeroed.) | |
| 617 | 2164 |
| 2165 As an example of why setting the values to Qnil is good, here | |
| 2166 is an old comment: | |
| 2167 | |
| 2168 In the loop | |
| 428 | 2169 (while t (split-window) (delete-window)) |
| 2170 we end up with a tree of deleted windows which are all connected | |
| 2171 through the `next' slot. This might not seem so bad, as they're | |
| 2172 deleted, and will presumably be GCed - but if even *one* of those | |
| 2173 windows is still being pointed to, by the user, or by a window | |
| 1149 | 2174 configuration, then *all* of those windows stick around. */ |
| 617 | 2175 |
| 618 | 2176 #define WINDOW_SLOT(slot) |
| 2177 #define WINDOW_SAVED_SLOT(slot, compare) w->slot = Qnil; | |
| 617 | 2178 #include "winslots.h" |
| 428 | 2179 |
| 618 | 2180 w->next = Qnil; |
| 2181 w->prev = Qnil; | |
| 2182 w->hchild = Qnil; | |
| 2183 w->vchild = Qnil; | |
| 2184 w->parent = Qnil; | |
| 2185 w->subwindow_instance_cache = Qnil; | |
| 2186 | |
| 428 | 2187 w->dead = 1; |
| 853 | 2188 note_object_deleted (wrap_window (w)); |
| 428 | 2189 } |
| 2190 | |
| 1207 | 2191 /* Check if window contains pwindow. */ |
| 2192 | |
| 2193 static int | |
| 2194 contains_window (Lisp_Object window, Lisp_Object pwindow) | |
| 2195 { | |
| 2196 while (!NILP (pwindow)) | |
| 2197 { | |
| 2198 if (EQ (window, pwindow)) | |
| 2199 return 1; | |
| 2200 pwindow = XWINDOW (pwindow)->parent; | |
| 2201 } | |
| 2202 return 0; | |
| 2203 } | |
| 2204 | |
| 428 | 2205 DEFUN ("delete-window", Fdelete_window, 0, 2, "", /* |
| 2206 Remove WINDOW from the display. Default is selected window. | |
| 444 | 2207 If window is the only one on its frame, the frame is deleted as well. |
| 428 | 2208 Normally, you cannot delete the last non-minibuffer-only frame (you must |
| 2209 use `save-buffers-kill-emacs' or `kill-emacs'). However, if optional | |
| 2210 second argument FORCE is non-nil, you can delete the last frame. (This | |
| 2211 will automatically call `save-buffers-kill-emacs'.) | |
| 2212 */ | |
| 2213 (window, force)) | |
| 2214 { | |
| 2215 /* This function can GC if this is the only window in the frame */ | |
| 2216 struct window *w; | |
| 2217 Lisp_Object parent; | |
| 2218 struct window *par; | |
| 2219 Lisp_Object frame; | |
| 2220 struct frame *f; | |
| 2221 struct device *d; | |
| 2222 | |
| 2223 /* Note: this function is called by other C code on non-leaf | |
| 2224 windows. */ | |
| 2225 | |
| 2226 /* Do the equivalent of decode_window() but don't error out on | |
| 2227 deleted window; it's OK to delete an already-deleted window. */ | |
| 2228 if (NILP (window)) | |
| 2229 window = Fselected_window (Qnil); | |
| 2230 else | |
| 2231 CHECK_WINDOW (window); | |
| 442 | 2232 |
| 428 | 2233 w = XWINDOW (window); |
| 2234 | |
| 2235 /* It's okay to delete an already-deleted window. */ | |
| 2236 if (! WINDOW_LIVE_P (w)) | |
| 2237 return Qnil; | |
| 2238 | |
| 853 | 2239 check_allowed_operation (OPERATION_DELETE_OBJECT, window, Qnil); |
| 2240 | |
| 428 | 2241 frame = WINDOW_FRAME (w); |
| 2242 f = XFRAME (frame); | |
| 2243 d = XDEVICE (FRAME_DEVICE (f)); | |
| 2244 | |
| 2245 if (TOP_LEVEL_WINDOW_P (w)) | |
| 2246 { | |
| 2247 if (NILP (memq_no_quit (frame, DEVICE_FRAME_LIST (d)))) | |
| 2248 /* this frame isn't fully initialized yet; don't blow up. */ | |
| 2249 return Qnil; | |
| 2250 | |
| 2251 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 563 | 2252 signal_error (Qinvalid_operation, "Attempt to delete the minibuffer window", Qunbound); |
| 428 | 2253 |
| 2254 /* It has been suggested that it's a good thing for C-x 0 to have this | |
| 2255 behavior, but not such a good idea for #'delete-window to have it. | |
| 2256 Maybe C-x 0 should be bound to something else, or maybe frame | |
| 2257 deletion should only happen when this is called interactively. | |
| 2258 */ | |
| 2259 delete_frame_internal (f, !NILP (force), 0, 0); | |
| 2260 return Qnil; | |
| 2261 } | |
| 2262 | |
| 2263 /* At this point, we know the window has a parent. */ | |
| 2264 parent = w->parent; | |
| 2265 par = XWINDOW (parent); | |
| 2266 | |
| 2267 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 430 | 2268 /* It's quite likely that deleting a window will result in |
| 2269 subwindows needing to be deleted also (since they are cached | |
| 2270 per-window). So we mark them as changed, so that the cachels will | |
| 2271 get reset by redisplay and thus deleted subwindows can get | |
| 2272 GC'd. */ | |
| 2273 MARK_FRAME_SUBWINDOWS_CHANGED (f); | |
| 428 | 2274 |
| 2275 /* Are we trying to delete any frame's selected window? | |
| 2276 Note that we could be dealing with a non-leaf window | |
| 2277 where the selected window is one of our children. | |
| 2278 So, we check by scanning all the ancestors of the | |
| 2279 frame's selected window and comparing each one with | |
| 2280 WINDOW. */ | |
| 1207 | 2281 if (contains_window (window, FRAME_SELECTED_WINDOW (f))) |
| 2282 { | |
| 2283 Lisp_Object alternative; | |
| 2284 alternative = Fnext_window (window, Qlambda, Qnil, Qnil); | |
| 2285 | |
| 2286 /* #### */ | |
| 2287 /* If we're about to delete the selected window on the | |
| 2288 selected frame, then we should use Fselect_window to select | |
| 2289 the new window. On the other hand, if we're about to | |
| 2290 delete the selected window on any other frame, we shouldn't do | |
| 2291 anything but set the frame's selected_window slot. */ | |
| 2292 if (EQ (frame, Fselected_frame (Qnil))) | |
| 2293 Fselect_window (alternative, Qnil); | |
| 2294 else | |
| 2295 set_frame_selected_window (f, alternative); | |
| 2296 } | |
| 2297 | |
| 2298 /* Some display parameters (gutter display specifically) depend on | |
| 2299 FRAME_LAST_NONMINIBUF (f) to be set to a live window. Ensure that. */ | |
| 2300 if (contains_window (window, FRAME_LAST_NONMINIBUF_WINDOW (f))) | |
| 2301 f->last_nonminibuf_window = Fnext_window (window, Qlambda, Qnil, Qnil); | |
| 428 | 2302 |
| 2303 /* w->buffer is nil in a non-leaf window; in this case, | |
| 2304 get rid of the markers we maintain that point into that buffer. */ | |
| 2305 if (!NILP (w->buffer)) | |
| 2306 { | |
| 2307 unshow_buffer (w); | |
| 2308 unchain_marker (w->pointm[CURRENT_DISP]); | |
| 2309 unchain_marker (w->pointm[DESIRED_DISP]); | |
| 2310 unchain_marker (w->pointm[CMOTION_DISP]); | |
| 2311 unchain_marker (w->start[CURRENT_DISP]); | |
| 2312 unchain_marker (w->start[DESIRED_DISP]); | |
| 2313 unchain_marker (w->start[CMOTION_DISP]); | |
| 2314 unchain_marker (w->sb_point); | |
| 1149 | 2315 w->buffer = Qnil; |
| 428 | 2316 } |
| 2317 | |
| 2318 /* close up the hole in the sibling list */ | |
| 2319 if (!NILP (w->next)) | |
| 2320 XWINDOW (w->next)->prev = w->prev; | |
| 2321 if (!NILP (w->prev)) | |
| 2322 XWINDOW (w->prev)->next = w->next; | |
| 2323 if (EQ (window, par->hchild)) | |
| 2324 par->hchild = w->next; | |
| 2325 if (EQ (window, par->vchild)) | |
| 2326 par->vchild = w->next; | |
| 2327 | |
| 2328 /* Find one of our siblings to give our space to. */ | |
| 2329 { | |
| 2330 Lisp_Object sib = w->prev; | |
| 2331 if (NILP (sib)) | |
| 2332 { | |
| 2333 /* If w gives its space to its next sibling, that sibling needs | |
| 2334 to have its top/left side pulled back to where w's is. | |
| 2335 set_window_{height,width} will re-position the sibling's | |
| 2336 children. */ | |
| 2337 sib = w->next; | |
| 2338 WINDOW_TOP (XWINDOW (sib)) = WINDOW_TOP (w); | |
| 2339 WINDOW_LEFT (XWINDOW (sib)) = WINDOW_LEFT (w); | |
| 2340 } | |
| 2341 | |
| 2342 /* Stretch that sibling. */ | |
| 2343 if (!NILP (par->vchild)) | |
| 2344 set_window_pixheight | |
| 2345 (sib, (WINDOW_HEIGHT (XWINDOW (sib)) + WINDOW_HEIGHT (w)), 1); | |
| 2346 if (!NILP (par->hchild)) | |
| 2347 set_window_pixwidth | |
| 2348 (sib, (WINDOW_WIDTH (XWINDOW (sib)) + WINDOW_WIDTH (w)), 1); | |
| 2349 } | |
| 2350 | |
| 2351 /* If parent now has only one child, | |
| 2352 put the child into the parent's place. */ | |
| 2353 { | |
| 2354 Lisp_Object parchild = par->hchild; | |
| 2355 if (NILP (parchild)) | |
| 2356 parchild = par->vchild; | |
| 2357 if (NILP (XWINDOW (parchild)->next)) | |
| 2358 { | |
| 2359 replace_window (parent, parchild); | |
| 2360 mark_window_as_deleted (XWINDOW (parent)); | |
| 2361 } | |
| 2362 } | |
| 2363 | |
| 2364 /* Since we may be deleting combination windows, we must make sure that | |
| 2365 not only W but all its children have been marked as deleted. */ | |
| 2366 if (!NILP (w->hchild)) | |
| 2367 delete_all_subwindows (XWINDOW (w->hchild)); | |
| 2368 else if (!NILP (w->vchild)) | |
| 2369 delete_all_subwindows (XWINDOW (w->vchild)); | |
| 2370 | |
| 1752 | 2371 /* Warning: mark_window_as_deleted calls window_unmap_subwindows and |
| 2372 therefore redisplay, so it requires the mirror structure to be | |
| 2373 correct. We must dirty the mirror before it is called. */ | |
| 2374 f->mirror_dirty = 1; | |
| 2375 | |
| 428 | 2376 mark_window_as_deleted (w); |
| 2377 | |
| 2378 return Qnil; | |
| 2379 } | |
| 2380 | |
| 2381 | |
| 2382 DEFUN ("next-window", Fnext_window, 0, 4, 0, /* | |
| 442 | 2383 Return the next window after WINDOW in the canonical ordering of windows. |
| 428 | 2384 If omitted, WINDOW defaults to the selected window. |
| 2385 | |
| 2386 Optional second arg MINIBUF t means count the minibuffer window even | |
| 2387 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
| 2388 it is active. MINIBUF neither t nor nil means not to count the | |
| 2389 minibuffer even if it is active. | |
| 2390 | |
| 2391 Several frames may share a single minibuffer; if the minibuffer | |
| 2392 counts, all windows on all frames that share that minibuffer count | |
| 2393 too. Therefore, `next-window' can be used to iterate through the | |
| 2394 set of windows even when the minibuffer is on another frame. If the | |
| 2395 minibuffer does not count, only windows from WINDOW's frame count. | |
| 2396 | |
| 444 | 2397 By default, only the windows in the selected frame are considered. |
| 2398 The optional argument WHICH-FRAMES changes this behavior: | |
| 2399 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2400 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2401 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2402 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2403 Anything else means restrict to the selected frame. | |
| 2404 | |
| 2405 The optional fourth argument WHICH-DEVICES further clarifies on which | |
| 2406 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 2407 is only meaningful if WHICH-FRAMES is non-nil. | |
| 2408 If nil or omitted, search all devices on the selected console. | |
| 2409 If a device, only search that device. | |
| 2410 If a console, search all devices on that console. | |
| 2411 If a device type, search all devices of that type. | |
| 2412 If `window-system', search all window-system devices. | |
| 2413 Any other non-nil value means search all devices. | |
| 2414 | |
| 2415 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
| 2416 you can use `next-window' to iterate through the entire cycle of | |
| 2417 acceptable windows, eventually ending up back at the window you started with. | |
| 428 | 2418 `previous-window' traverses the same cycle, in the reverse order. |
| 2419 */ | |
| 444 | 2420 (window, minibuf, which_frames, which_devices)) |
| 428 | 2421 { |
| 2422 Lisp_Object tem; | |
| 2423 Lisp_Object start_window; | |
| 2424 | |
| 2425 if (NILP (window)) | |
| 2426 window = Fselected_window (Qnil); | |
| 2427 else | |
| 2428 CHECK_LIVE_WINDOW (window); | |
| 2429 | |
| 2430 start_window = window; | |
| 2431 | |
| 2432 /* minibuf == nil may or may not include minibuffers. | |
| 2433 Decide if it does. */ | |
| 2434 if (NILP (minibuf)) | |
| 2435 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
| 2436 else if (! EQ (minibuf, Qt)) | |
| 2437 minibuf = Qlambda; | |
| 442 | 2438 /* Now `minibuf' is one of: |
| 2439 t => count all minibuffer windows | |
| 2440 lambda => count none of them | |
| 428 | 2441 or a specific minibuffer window (the active one) to count. */ |
| 2442 | |
| 444 | 2443 /* which_frames == nil doesn't specify which frames to include. */ |
| 2444 if (NILP (which_frames)) | |
| 2445 which_frames = (! EQ (minibuf, Qlambda) | |
| 428 | 2446 ? (FRAME_MINIBUF_WINDOW |
| 2447 (XFRAME | |
| 2448 (WINDOW_FRAME | |
| 2449 (XWINDOW (window))))) | |
| 2450 : Qnil); | |
| 444 | 2451 else if (EQ (which_frames, Qvisible)) |
| 428 | 2452 ; |
| 444 | 2453 else if (ZEROP (which_frames)) |
| 428 | 2454 ; |
| 444 | 2455 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
| 2456 /* If which_frames is a frame and window arg isn't on that frame, just | |
| 428 | 2457 return the first window on the frame. */ |
| 444 | 2458 return frame_first_window (XFRAME (which_frames)); |
| 2459 else if (! EQ (which_frames, Qt)) | |
| 2460 which_frames = Qnil; | |
| 2461 /* Now `which_frames' is one of: | |
| 442 | 2462 t => search all frames |
| 2463 nil => search just the current frame | |
| 2464 visible => search just visible frames | |
| 2465 0 => search visible and iconified frames | |
| 2466 a window => search the frame that window belongs to. */ | |
| 428 | 2467 |
| 2468 /* Do this loop at least once, to get the next window, and perhaps | |
| 2469 again, if we hit the minibuffer and that is not acceptable. */ | |
| 2470 do | |
| 2471 { | |
| 2472 /* Find a window that actually has a next one. This loop | |
| 2473 climbs up the tree. */ | |
| 2474 while (tem = XWINDOW (window)->next, NILP (tem)) | |
| 2475 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
| 2476 window = tem; | |
| 2477 else /* window must be minibuffer window now */ | |
| 2478 { | |
| 2479 /* We've reached the end of this frame. | |
| 2480 Which other frames are acceptable? */ | |
| 2481 tem = WINDOW_FRAME (XWINDOW (window)); | |
| 2482 | |
| 444 | 2483 if (! NILP (which_frames)) |
| 428 | 2484 { |
| 442 | 2485 Lisp_Object tem1 = tem; |
| 444 | 2486 tem = next_frame (tem, which_frames, which_devices); |
| 442 | 2487 |
| 428 | 2488 /* In the case where the minibuffer is active, |
| 2489 and we include its frame as well as the selected one, | |
| 2490 next_frame may get stuck in that frame. | |
| 2491 If that happens, go back to the selected frame | |
| 2492 so we can complete the cycle. */ | |
| 2493 if (EQ (tem, tem1)) | |
| 793 | 2494 tem = wrap_frame (selected_frame ()); |
| 428 | 2495 } |
| 2496 | |
| 2497 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
| 2498 break; | |
| 2499 } | |
| 2500 | |
| 2501 window = tem; | |
| 2502 | |
| 2503 /* If we're in a combination window, find its first child and | |
| 2504 recurse on that. Otherwise, we've found the window we want. */ | |
| 2505 while (1) | |
| 2506 { | |
| 2507 if (!NILP (XWINDOW (window)->hchild)) | |
| 2508 window = XWINDOW (window)->hchild; | |
| 2509 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2510 window = XWINDOW (window)->vchild; | |
| 2511 else break; | |
| 2512 } | |
| 2513 } | |
| 2514 /* Which windows are acceptable? | |
| 2515 Exit the loop and accept this window if | |
| 2516 this isn't a minibuffer window, | |
| 2517 or we're accepting all minibuffer windows, | |
| 2518 or this is the active minibuffer and we are accepting that one, or | |
| 2519 we've come all the way around and we're back at the original window. */ | |
| 2520 while (MINI_WINDOW_P (XWINDOW (window)) | |
| 2521 && ! EQ (minibuf, Qt) | |
| 2522 && ! EQ (minibuf, window) | |
| 2523 && ! EQ (window, start_window)); | |
| 2524 | |
| 2525 return window; | |
| 2526 } | |
| 2527 | |
| 2528 DEFUN ("previous-window", Fprevious_window, 0, 4, 0, /* | |
| 442 | 2529 Return the window preceding WINDOW in the canonical ordering of windows. |
| 428 | 2530 If omitted, WINDOW defaults to the selected window. |
| 2531 | |
| 2532 Optional second arg MINIBUF t means count the minibuffer window even | |
| 2533 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
| 2534 it is active. MINIBUF neither t nor nil means not to count the | |
| 2535 minibuffer even if it is active. | |
| 2536 | |
| 2537 Several frames may share a single minibuffer; if the minibuffer | |
| 2538 counts, all windows on all frames that share that minibuffer count | |
| 2539 too. Therefore, `previous-window' can be used to iterate through | |
| 2540 the set of windows even when the minibuffer is on another frame. If | |
| 442 | 2541 the minibuffer does not count, only windows from WINDOW's frame count. |
| 2542 | |
| 444 | 2543 By default, only the windows in the selected frame are considered. |
| 2544 The optional argument WHICH-FRAMES changes this behavior: | |
| 2545 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2546 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2547 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2548 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2549 Anything else means restrict to the selected frame. | |
| 2550 | |
| 2551 The optional fourth argument WHICH-DEVICES further clarifies on which | |
| 2552 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 2553 is only meaningful if WHICH-FRAMES is non-nil. | |
| 2554 If nil or omitted, search all devices on the selected console. | |
| 2555 If a device, only search that device. | |
| 2556 If a console, search all devices on that console. | |
| 2557 If a device type, search all devices of that type. | |
| 2558 If `window-system', search all window-system devices. | |
| 2559 Any other non-nil value means search all devices. | |
| 2560 | |
| 2561 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
| 2562 you can use `previous-window' to iterate through the entire cycle of | |
| 2563 acceptable windows, eventually ending up back at the window you started with. | |
| 428 | 2564 `next-window' traverses the same cycle, in the reverse order. |
| 2565 */ | |
| 444 | 2566 (window, minibuf, which_frames, devices)) |
| 428 | 2567 { |
| 2568 Lisp_Object tem; | |
| 2569 Lisp_Object start_window; | |
| 2570 | |
| 2571 if (NILP (window)) | |
| 2572 window = Fselected_window (Qnil); | |
| 2573 else | |
| 2574 CHECK_LIVE_WINDOW (window); | |
| 2575 | |
| 2576 start_window = window; | |
| 2577 | |
| 2578 /* minibuf == nil may or may not include minibuffers. | |
| 2579 Decide if it does. */ | |
| 2580 if (NILP (minibuf)) | |
| 2581 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
| 2582 else if (! EQ (minibuf, Qt)) | |
| 2583 minibuf = Qlambda; | |
| 442 | 2584 /* Now `minibuf' is one of: |
| 2585 t => count all minibuffer windows | |
| 2586 lambda => count none of them | |
| 428 | 2587 or a specific minibuffer window (the active one) to count. */ |
| 2588 | |
| 444 | 2589 /* which_frames == nil doesn't specify which frames to include. |
| 428 | 2590 Decide which frames it includes. */ |
| 444 | 2591 if (NILP (which_frames)) |
| 2592 which_frames = (! EQ (minibuf, Qlambda) | |
| 428 | 2593 ? (FRAME_MINIBUF_WINDOW |
| 2594 (XFRAME | |
| 2595 (WINDOW_FRAME | |
| 2596 (XWINDOW (window))))) | |
| 2597 : Qnil); | |
| 444 | 2598 else if (EQ (which_frames, Qvisible)) |
| 428 | 2599 ; |
| 444 | 2600 else if (ZEROP (which_frames)) |
| 428 | 2601 ; |
| 444 | 2602 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
| 2603 /* If which_frames is a frame and window arg isn't on that frame, just | |
| 428 | 2604 return the first window on the frame. */ |
| 444 | 2605 return frame_first_window (XFRAME (which_frames)); |
| 2606 else if (! EQ (which_frames, Qt)) | |
| 2607 which_frames = Qnil; | |
| 2608 /* Now `which_frames' is one of: | |
| 442 | 2609 t => search all frames |
| 2610 nil => search just the current frame | |
| 2611 visible => search just visible frames | |
| 2612 0 => search visible and iconified frames | |
| 2613 a window => search the frame that window belongs to. */ | |
| 428 | 2614 |
| 2615 /* Do this loop at least once, to get the next window, and perhaps | |
| 2616 again, if we hit the minibuffer and that is not acceptable. */ | |
| 2617 do | |
| 2618 { | |
| 2619 /* Find a window that actually has a next one. This loop | |
| 2620 climbs up the tree. */ | |
| 2621 while (tem = XWINDOW (window)->prev, NILP (tem)) | |
| 2622 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
| 2623 window = tem; | |
| 2624 else /* window must be minibuffer window now */ | |
| 2625 { | |
| 2626 /* We have found the top window on the frame. | |
| 2627 Which frames are acceptable? */ | |
| 2628 tem = WINDOW_FRAME (XWINDOW (window)); | |
| 2629 | |
| 444 | 2630 if (! NILP (which_frames)) |
| 442 | 2631 /* It's actually important that we use previous_frame here, |
| 428 | 2632 rather than next_frame. All the windows acceptable |
| 2633 according to the given parameters should form a ring; | |
| 2634 Fnext_window and Fprevious_window should go back and | |
| 2635 forth around the ring. If we use next_frame here, | |
| 2636 then Fnext_window and Fprevious_window take different | |
| 2637 paths through the set of acceptable windows. | |
| 2638 window_loop assumes that these `ring' requirement are | |
| 2639 met. */ | |
| 2640 { | |
| 442 | 2641 Lisp_Object tem1 = tem; |
| 444 | 2642 tem = previous_frame (tem, which_frames, devices); |
| 428 | 2643 /* In the case where the minibuffer is active, |
| 2644 and we include its frame as well as the selected one, | |
| 2645 next_frame may get stuck in that frame. | |
| 2646 If that happens, go back to the selected frame | |
| 2647 so we can complete the cycle. */ | |
| 2648 if (EQ (tem, tem1)) | |
| 793 | 2649 tem = wrap_frame (selected_frame ()); |
| 428 | 2650 } |
| 2651 | |
| 2652 /* If this frame has a minibuffer, find that window first, | |
| 2653 because it is conceptually the last window in that frame. */ | |
| 2654 if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) | |
| 2655 tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
| 2656 else | |
| 2657 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
| 2658 | |
| 2659 break; | |
| 2660 } | |
| 2661 | |
| 2662 window = tem; | |
| 2663 | |
| 2664 /* If we're in a combination window, find its first child and | |
| 2665 recurse on that. Otherwise, we've found the window we want. */ | |
| 2666 while (1) | |
| 2667 { | |
| 2668 if (!NILP (XWINDOW (window)->hchild)) | |
| 2669 window = XWINDOW (window)->hchild; | |
| 2670 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2671 window = XWINDOW (window)->vchild; | |
| 2672 else break; | |
| 2673 while (tem = XWINDOW (window)->next, !NILP (tem)) | |
| 2674 window = tem; | |
| 2675 } | |
| 2676 } | |
| 2677 /* Which windows are acceptable? | |
| 2678 Exit the loop and accept this window if | |
| 2679 this isn't a minibuffer window, | |
| 2680 or we're accepting all minibuffer windows, | |
| 2681 or this is the active minibuffer and we are accepting that one, or | |
| 2682 we've come all the way around and we're back at the original window. */ | |
| 2683 while (MINI_WINDOW_P (XWINDOW (window)) | |
| 2684 && ! EQ (minibuf, Qt) | |
| 2685 && ! EQ (minibuf, window) | |
| 2686 && ! EQ (window, start_window)); | |
| 2687 | |
| 2688 return window; | |
| 2689 } | |
| 2690 | |
| 2691 DEFUN ("next-vertical-window", Fnext_vertical_window, 0, 1, 0, /* | |
| 2692 Return the next window which is vertically after WINDOW. | |
| 2693 */ | |
| 2694 (window)) | |
| 2695 { | |
| 2696 Lisp_Object root; | |
| 2697 struct window *w = decode_window (window); | |
| 793 | 2698 window = wrap_window (w); |
| 428 | 2699 |
| 2700 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 2701 return Qnil; | |
| 2702 | |
| 2703 root = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
| 2704 | |
| 2705 if (EQ (window, root)) | |
| 2706 { | |
| 2707 while (1) | |
| 2708 if (!NILP (XWINDOW (window)->hchild)) | |
| 2709 window = XWINDOW (window)->hchild; | |
| 2710 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2711 window = XWINDOW (window)->vchild; | |
| 2712 else | |
| 2713 return window; | |
| 2714 } | |
| 2715 | |
| 2716 do | |
| 2717 { | |
| 2718 if (!NILP (XWINDOW (window)->parent) && | |
| 2719 !NILP (XWINDOW (XWINDOW (window)->parent)->vchild)) | |
| 2720 { | |
| 2721 if (!NILP (XWINDOW (window)->next)) | |
| 2722 return XWINDOW (window)->next; | |
| 2723 else | |
| 2724 window = XWINDOW (window)->parent; | |
| 2725 } | |
| 2726 else | |
| 2727 window = XWINDOW (window)->parent; | |
| 2728 } | |
| 2729 while (!EQ (window, root)); | |
| 2730 | |
| 2731 while (1) | |
| 2732 if (!NILP (XWINDOW (window)->hchild)) | |
| 2733 window = XWINDOW (window)->hchild; | |
| 2734 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2735 window = XWINDOW (window)->vchild; | |
| 2736 else | |
| 2737 return window; | |
| 2738 } | |
| 2739 | |
| 2740 DEFUN ("other-window", Fother_window, 1, 3, "p", /* | |
| 444 | 2741 Select the COUNT'th different window on this frame. |
| 428 | 2742 All windows on current frame are arranged in a cyclic order. |
| 444 | 2743 This command selects the window COUNT steps away in that order. |
| 2744 A negative COUNT moves in the opposite order. | |
| 2745 | |
| 2746 By default, only the windows in the selected frame are considered. | |
| 2747 The optional argument WHICH-FRAMES changes this behavior: | |
| 2748 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2749 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2750 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2751 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2752 Anything else means restrict to the selected frame. | |
| 2753 | |
| 2754 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 2755 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 2756 meaningful if WHICH-FRAMES is non-nil. | |
| 2757 If nil or omitted, search all devices on the selected console. | |
| 2758 If a device, only search that device. | |
| 2759 If a console, search all devices on that console. | |
| 2760 If a device type, search all devices of that type. | |
| 2761 If `window-system', search all window-system devices. | |
| 2762 Any other non-nil value means search all devices. | |
| 428 | 2763 */ |
| 444 | 2764 (count, which_frames, which_devices)) |
| 428 | 2765 { |
| 2766 int i; | |
| 2767 Lisp_Object w; | |
| 2768 | |
| 444 | 2769 CHECK_INT (count); |
| 428 | 2770 w = Fselected_window (Qnil); |
| 444 | 2771 i = XINT (count); |
| 428 | 2772 |
| 2773 while (i > 0) | |
| 2774 { | |
| 444 | 2775 w = Fnext_window (w, Qnil, which_frames, which_devices); |
| 428 | 2776 i--; |
| 2777 } | |
| 2778 while (i < 0) | |
| 2779 { | |
| 444 | 2780 w = Fprevious_window (w, Qnil, which_frames, which_devices); |
| 428 | 2781 i++; |
| 2782 } | |
| 2783 Fselect_window (w, Qnil); | |
| 2784 return Qnil; | |
| 2785 } | |
| 2786 | |
| 2787 | |
| 2788 /* Look at all windows, performing an operation specified by TYPE | |
| 2789 with argument OBJ. | |
| 2790 | |
| 2791 If FRAMES is Qt, look at all frames, if Qnil, look at just the selected | |
| 2792 frame. If FRAMES is a frame, just look at windows on that frame. | |
| 2793 If MINI is non-zero, perform the operation on minibuffer windows too. | |
| 2794 */ | |
| 2795 | |
| 2796 enum window_loop | |
| 2797 { | |
| 2798 WINDOW_LOOP_UNUSED, | |
| 2799 GET_BUFFER_WINDOW, /* Arg is buffer */ | |
| 2800 GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
| 2801 DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
| 2802 DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
| 2803 GET_LARGEST_WINDOW, | |
| 2804 GET_BUFFER_WINDOW_COUNT, /* Arg is buffer */ | |
| 2805 GET_BUFFER_MRU_WINDOW /* Arg is buffer */ | |
| 2806 }; | |
| 2807 | |
| 2808 static Lisp_Object | |
| 2809 window_loop (enum window_loop type, | |
| 2810 Lisp_Object obj, | |
| 2811 int mini, | |
| 444 | 2812 Lisp_Object which_frames, |
| 428 | 2813 int dedicated_too, |
| 444 | 2814 Lisp_Object which_devices) |
| 428 | 2815 { |
| 448 | 2816 /* This function can GC if type == DELETE_BUFFER_WINDOWS */ |
| 428 | 2817 Lisp_Object w; |
| 2818 Lisp_Object best_window = Qnil; | |
| 2819 Lisp_Object next_window; | |
| 2820 Lisp_Object last_window; | |
| 2821 struct frame *frame; | |
| 2822 Lisp_Object frame_arg = Qt; | |
| 2823 int count = 0; /* for GET_BUFFER_WINDOW_COUNT */ | |
| 2824 /* #### I think the change of "precomputing" last_window and next_window | |
| 2825 * #### catch the lossage this is meant(?) to punt on... | |
| 2826 */ | |
| 2827 int lose_lose = 0; | |
| 2828 Lisp_Object devcons, concons; | |
| 2829 | |
| 2830 /* If we're only looping through windows on a particular frame, | |
| 2831 FRAME points to that frame. If we're looping through windows | |
| 2832 on all frames, FRAME is 0. */ | |
| 444 | 2833 if (FRAMEP (which_frames)) |
| 2834 frame = XFRAME (which_frames); | |
| 2835 else if (NILP (which_frames)) | |
| 428 | 2836 frame = selected_frame (); |
| 2837 else | |
| 2838 frame = 0; | |
| 442 | 2839 |
| 2840 /* FRAME_ARG is Qlambda to stick to one frame, | |
| 2841 Qvisible to consider all visible frames, | |
| 2842 or Qt otherwise. */ | |
| 428 | 2843 if (frame) |
| 2844 frame_arg = Qlambda; | |
| 444 | 2845 else if (ZEROP (which_frames)) |
| 2846 frame_arg = which_frames; | |
| 2847 else if (EQ (which_frames, Qvisible)) | |
| 2848 frame_arg = which_frames; | |
| 428 | 2849 |
| 2850 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 2851 { | |
| 2852 Lisp_Object device = XCAR (devcons); | |
| 2853 Lisp_Object the_frame; | |
| 2854 | |
| 2855 if (frame) | |
| 793 | 2856 the_frame = wrap_frame (frame); |
| 428 | 2857 else |
| 2858 the_frame = DEVICE_SELECTED_FRAME (XDEVICE (device)); | |
| 2859 | |
| 2860 if (NILP (the_frame)) | |
| 2861 continue; | |
| 2862 | |
| 444 | 2863 if (!device_matches_device_spec (device, |
| 2864 NILP (which_devices) ? | |
| 2865 FRAME_CONSOLE (XFRAME (the_frame)) : | |
| 2866 which_devices)) | |
| 428 | 2867 continue; |
| 2868 | |
| 2869 /* Pick a window to start with. */ | |
| 2870 if (WINDOWP (obj)) | |
| 2871 w = obj; | |
| 2872 else | |
| 2873 w = FRAME_SELECTED_WINDOW (XFRAME (the_frame)); | |
| 2874 | |
| 2875 /* Figure out the last window we're going to mess with. Since | |
| 2876 Fnext_window, given the same options, is guaranteed to go in a | |
| 2877 ring, we can just use Fprevious_window to find the last one. | |
| 2878 | |
| 2879 We can't just wait until we hit the first window again, | |
| 2880 because it might be deleted. */ | |
| 2881 | |
| 707 | 2882 last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg, device); |
| 428 | 2883 |
| 2884 best_window = Qnil; | |
| 2885 for (;;) | |
| 2886 { | |
| 2887 struct window *p = XWINDOW (w); | |
| 2888 | |
| 2889 /* Pick the next window now, since some operations will delete | |
| 2890 the current window. */ | |
| 442 | 2891 next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg, device); |
| 428 | 2892 |
| 2893 /* #### Still needed ?? */ | |
| 2894 /* Given the outstanding quality of the rest of this code, | |
| 2895 I feel no shame about putting this piece of shit in. */ | |
| 2896 if (++lose_lose >= 500) | |
| 707 | 2897 { |
| 2500 | 2898 /* Call to ABORT() added by Darryl Okahata (16 Nov. 2001), |
| 707 | 2899 at Ben's request, to catch any remaining bugs. |
| 2900 | |
| 2901 If you find that XEmacs is aborting here, and you | |
| 2902 need to be up and running ASAP, it should be safe to | |
| 2500 | 2903 comment out the following ABORT(), as long as you |
| 707 | 2904 leave the "break;" alone. */ |
| 2500 | 2905 ABORT(); |
| 707 | 2906 break; /* <--- KEEP THIS HERE! Do not delete! */ |
| 2907 } | |
| 428 | 2908 |
| 2909 /* Note that we do not pay attention here to whether | |
| 2910 the frame is visible, since Fnext_window skips non-visible frames | |
| 2911 if that is desired, under the control of frame_arg. */ | |
| 2912 if (! MINI_WINDOW_P (p) | |
| 2913 || (mini && minibuf_level > 0)) | |
| 2914 switch (type) | |
| 2915 { | |
| 2916 case GET_BUFFER_WINDOW: | |
| 2917 { | |
| 2918 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2919 return w; | |
| 2920 break; | |
| 2921 } | |
| 2922 | |
| 2923 case GET_BUFFER_WINDOW_COUNT: | |
| 2924 { | |
| 2925 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2926 count++; | |
| 2927 break; | |
| 2928 } | |
| 2929 | |
| 2930 case GET_LRU_WINDOW: | |
| 2931 { | |
| 2932 /* t as arg means consider only full-width windows */ | |
| 2933 if (!NILP (obj) | |
| 2934 && !window_full_width_p (p)) | |
| 2935 break; | |
| 2936 /* Ignore dedicated windows and minibuffers. */ | |
| 2937 if (MINI_WINDOW_P (p) | |
| 2938 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 2939 break; | |
| 2940 if (NILP (best_window) | |
| 2941 || (XINT (XWINDOW (best_window)->use_time) | |
| 2942 > XINT (p->use_time))) | |
| 2943 best_window = w; | |
| 2944 break; | |
| 2945 } | |
| 2946 | |
| 2947 case GET_BUFFER_MRU_WINDOW: | |
| 2948 { | |
| 2949 /* #### what about the first check in GET_LRU_WINDOW? */ | |
| 2950 /* Ignore dedicated windows and minibuffers. */ | |
| 2951 if (MINI_WINDOW_P (p) | |
| 2952 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 2953 break; | |
| 2954 | |
| 2955 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2956 { | |
| 2957 if (NILP (best_window) | |
| 2958 || (XINT (XWINDOW (best_window)->use_time) | |
| 2959 < XINT (p->use_time))) | |
| 2960 best_window = w; | |
| 2961 } | |
| 2962 break; | |
| 2963 } | |
| 2964 | |
| 2965 case DELETE_OTHER_WINDOWS: | |
| 2966 { | |
| 2967 /* Don't delete the last window on a frame; this can | |
| 2968 happen when the minibuffer is selected, and would | |
| 2969 cause the frame to be deleted. */ | |
| 2970 if (p != XWINDOW (obj) && !TOP_LEVEL_WINDOW_P (XWINDOW (w))) | |
| 2971 Fdelete_window (w, Qnil); | |
| 2972 break; | |
| 2973 } | |
| 2974 | |
| 2975 case DELETE_BUFFER_WINDOWS: | |
| 2976 { | |
| 2977 if (EQ (p->buffer, obj)) | |
| 2978 { | |
| 2979 struct frame *f = XFRAME (WINDOW_FRAME (p)); | |
| 2980 | |
| 2981 /* If this window is dedicated, and in a frame | |
| 2982 of its own, kill the frame. */ | |
| 2983 if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
| 2984 && !NILP (p->dedicated) | |
| 1979 | 2985 && (allow_deletion_of_last_visible_frame |
| 2986 || other_visible_frames (f))) | |
| 428 | 2987 { |
| 2988 /* Skip the other windows on this frame. | |
| 2989 There might be one, the minibuffer! */ | |
| 2990 if (! EQ (w, last_window)) | |
| 2991 while (f == XFRAME (WINDOW_FRAME | |
| 2992 (XWINDOW (next_window)))) | |
| 2993 { | |
| 2994 /* As we go, check for the end of the | |
| 2995 loop. We mustn't start going | |
| 2996 around a second time. */ | |
| 2997 if (EQ (next_window, last_window)) | |
| 2998 { | |
| 2999 last_window = w; | |
| 3000 break; | |
| 3001 } | |
| 3002 next_window = Fnext_window (next_window, | |
| 3003 mini ? Qt : Qnil, | |
| 3004 frame_arg, Qt); | |
| 3005 } | |
| 3006 /* Now we can safely delete the frame. */ | |
| 3007 Fdelete_frame (WINDOW_FRAME (p), Qnil); | |
| 3008 } | |
| 3009 else | |
| 3010 /* If we're deleting the buffer displayed in | |
| 3011 the only window on the frame, find a new | |
| 3012 buffer to display there. */ | |
| 3013 if (NILP (p->parent)) | |
| 3014 { | |
| 3015 Lisp_Object new_buffer; | |
| 3016 new_buffer = Fother_buffer (obj, Qnil, Qnil); | |
| 3017 if (NILP (new_buffer)) | |
| 3018 new_buffer = Fget_buffer_create (QSscratch); | |
| 440 | 3019 Fset_window_buffer (w, new_buffer, Qnil); |
| 428 | 3020 if (EQ (w, Fselected_window (Qnil))) |
| 3021 Fset_buffer (p->buffer); | |
| 3022 } | |
| 3023 else | |
| 3024 Fdelete_window (w, Qnil); | |
| 3025 } | |
| 3026 break; | |
| 3027 } | |
| 3028 | |
| 3029 case GET_LARGEST_WINDOW: | |
| 3030 { | |
| 3031 /* Ignore dedicated windows and minibuffers. */ | |
| 3032 if (MINI_WINDOW_P (p) | |
| 3033 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 3034 break; | |
| 3035 { | |
| 3036 /* write the check as follows to avoid tripping | |
| 3037 error_check_window() --ben */ | |
| 3038 struct window *b = NILP (best_window) ? 0 : | |
| 3039 XWINDOW (best_window); | |
| 3040 if (NILP (best_window) | |
| 3041 || ((WINDOW_HEIGHT (p) * WINDOW_WIDTH (p)) | |
| 3042 > (WINDOW_HEIGHT (b) * WINDOW_WIDTH (b)))) | |
| 3043 best_window = w; | |
| 3044 } | |
| 3045 break; | |
| 3046 } | |
| 3047 | |
| 3048 default: | |
| 2500 | 3049 ABORT (); |
| 428 | 3050 } |
| 3051 | |
| 3052 if (EQ (w, last_window)) | |
| 3053 break; | |
| 3054 | |
| 3055 w = next_window; | |
| 3056 } | |
| 3057 } | |
| 3058 | |
| 3059 return type == GET_BUFFER_WINDOW_COUNT ? make_int (count) : best_window; | |
| 3060 } | |
| 3061 | |
| 3062 #if 0 /* not currently used */ | |
| 3063 | |
| 3064 int | |
| 3065 buffer_window_count (struct buffer *b, struct frame *f) | |
| 3066 { | |
| 3067 Lisp_Object buffer, frame; | |
| 3068 | |
| 793 | 3069 frame = wrap_frame (f); |
| 3070 buffer = wrap_buffer (b); | |
| 428 | 3071 |
| 3072 return XINT (window_loop (GET_BUFFER_WINDOW_COUNT, buffer, 0, frame, 1, | |
| 3073 Qnil)); | |
| 3074 } | |
| 3075 | |
| 3076 int | |
| 3077 buffer_window_mru (struct window *w) | |
| 3078 { | |
| 3079 Lisp_Object window = | |
| 3080 window_loop (GET_BUFFER_MRU_WINDOW, w->buffer, 0, w->frame, 1, Qnil); | |
| 3081 | |
| 3082 if (NILP (window)) | |
| 3083 return 0; | |
| 3084 else if (XWINDOW (window) == w) | |
| 3085 return 1; | |
| 3086 else | |
| 3087 return 0; | |
| 3088 } | |
| 3089 | |
| 3090 #endif | |
| 3091 | |
| 3092 | |
| 3093 DEFUN ("get-lru-window", Fget_lru_window, 0, 2, 0, /* | |
| 3094 Return the window least recently selected or used for display. | |
| 444 | 3095 |
| 3096 By default, only the windows in the selected frame are considered. | |
| 3097 The optional argument WHICH-FRAMES changes this behavior: | |
| 3098 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3099 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3100 If WHICH-FRAMES is t, search all frames. | |
| 3101 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3102 If WHICH-FRAMES is a frame, search only that frame. | |
| 3103 | |
| 3104 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3105 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3106 meaningful if WHICH-FRAMES is non-nil. | |
| 3107 If nil or omitted, search all devices on the selected console. | |
| 3108 If a device, only search that device. | |
| 3109 If a console, search all devices on that console. | |
| 3110 If a device type, search all devices of that type. | |
| 3111 If `window-system', search all devices on window-system consoles. | |
| 3112 Any other non-nil value means search all devices. | |
| 428 | 3113 */ |
| 444 | 3114 (which_frames, which_devices)) |
| 428 | 3115 { |
| 3116 Lisp_Object w; | |
| 3117 /* First try for a non-dedicated window that is full-width */ | |
| 444 | 3118 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 0, which_devices); |
| 428 | 3119 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3120 return w; | |
| 3121 | |
| 3122 /* Then try for any non-dedicated window */ | |
| 444 | 3123 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 0, which_devices); |
| 428 | 3124 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3125 return w; | |
| 3126 | |
| 3127 #if 0 | |
| 3128 /* FSFmacs never returns a dedicated window here. If we do, | |
| 3129 it makes `display-buffer' not work right. #### All of this | |
| 3130 shit is so disgusting and awful that it needs to be rethought | |
| 3131 from scratch. */ | |
| 3132 /* then try for a dedicated window that is full-width */ | |
| 444 | 3133 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 1, which_devices); |
| 428 | 3134 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3135 return w; | |
| 3136 | |
| 3137 /* If none of them, then all windows, dedicated or not. */ | |
| 444 | 3138 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 1, which_devices); |
| 428 | 3139 |
| 3140 /* At this point we damn well better have found something. */ | |
| 2500 | 3141 if (NILP (w)) ABORT (); |
| 428 | 3142 #endif |
| 3143 | |
| 3144 return w; | |
| 3145 } | |
| 3146 | |
| 3147 DEFUN ("get-largest-window", Fget_largest_window, 0, 2, 0, /* | |
| 3148 Return the window largest in area. | |
| 444 | 3149 |
| 3150 By default, only the windows in the selected frame are considered. | |
| 3151 The optional argument WHICH-FRAMES changes this behavior: | |
| 3152 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3153 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3154 If WHICH-FRAMES is t, search all frames. | |
| 3155 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3156 If WHICH-FRAMES is a frame, search only that frame. | |
| 3157 | |
| 3158 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3159 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3160 meaningful if WHICH-FRAMES is non-nil. | |
| 3161 If nil or omitted, search all devices on the selected console. | |
| 3162 If a device, only search that device. | |
| 3163 If a console, search all devices on that console. | |
| 3164 If a device type, search all devices of that type. | |
| 3165 If `window-system', search all devices on window-system consoles. | |
| 3166 Any other non-nil value means search all devices. | |
| 428 | 3167 */ |
| 444 | 3168 (which_frames, which_devices)) |
| 428 | 3169 { |
| 3170 /* Don't search dedicated windows because FSFmacs doesn't. | |
| 3171 This stuff is all black magic so don't try to apply common | |
| 3172 sense to it. */ | |
| 444 | 3173 return window_loop (GET_LARGEST_WINDOW, Qnil, 0, |
| 3174 which_frames, 0, which_devices); | |
| 428 | 3175 } |
| 3176 | |
| 3177 DEFUN ("get-buffer-window", Fget_buffer_window, 1, 3, 0, /* | |
| 3178 Return a window currently displaying BUFFER, or nil if none. | |
| 444 | 3179 |
| 3180 By default, only the windows in the selected frame are considered. | |
| 3181 The optional argument WHICH-FRAMES changes this behavior: | |
| 3182 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3183 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3184 If WHICH-FRAMES is t, search all frames. | |
| 3185 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3186 If WHICH-FRAMES is a frame, search only that frame. | |
| 3187 | |
| 3188 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3189 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3190 meaningful if WHICH-FRAMES is non-nil. | |
| 3191 If nil or omitted, search all devices on the selected console. | |
| 3192 If a device, only search that device. | |
| 3193 If a console, search all devices on that console. | |
| 3194 If a device type, search all devices of that type. | |
| 3195 If `window-system', search all devices on window-system consoles. | |
| 3196 Any other non-nil value means search all devices. | |
| 428 | 3197 */ |
| 444 | 3198 (buffer, which_frames, which_devices)) |
| 428 | 3199 { |
| 3200 buffer = Fget_buffer (buffer); | |
| 3201 if (BUFFERP (buffer)) | |
| 3202 /* Search dedicated windows too. (Doesn't matter here anyway.) */ | |
| 444 | 3203 return window_loop (GET_BUFFER_WINDOW, buffer, 1, |
| 3204 which_frames, 1, which_devices); | |
| 428 | 3205 else |
| 3206 return Qnil; | |
| 3207 } | |
| 3208 | |
| 3209 /* These functions used to be `buffer-left-margin-pixel-width', etc. | |
| 3210 but there is no sensible way to implement those functions, since | |
| 3211 you can't in general derive a window from a buffer. */ | |
| 3212 | |
| 3213 DEFUN ("window-left-margin-pixel-width", Fwindow_left_margin_pixel_width, | |
| 3214 0, 1, 0, /* | |
| 3215 Return the width in pixels of the left outside margin of window WINDOW. | |
| 3216 If WINDOW is nil, the selected window is assumed. | |
| 3217 */ | |
| 3218 (window)) | |
| 3219 { | |
| 3220 return make_int (window_left_margin_width (decode_window (window))); | |
| 3221 } | |
| 3222 | |
| 3223 DEFUN ("window-right-margin-pixel-width", Fwindow_right_margin_pixel_width, | |
| 3224 0, 1, 0, /* | |
| 3225 Return the width in pixels of the right outside margin of window WINDOW. | |
| 3226 If WINDOW is nil, the selected window is assumed. | |
| 3227 */ | |
| 3228 (window)) | |
| 3229 { | |
| 3230 return make_int (window_right_margin_width (decode_window (window))); | |
| 3231 } | |
| 3232 | |
| 3233 DEFUN ("delete-other-windows", Fdelete_other_windows, 0, 1, "", /* | |
| 3234 Make WINDOW (or the selected window) fill its frame. | |
| 3235 Only the frame WINDOW is on is affected. | |
| 3236 This function tries to reduce display jumps | |
| 3237 by keeping the text previously visible in WINDOW | |
| 3238 in the same place on the frame. Doing this depends on | |
| 3239 the value of (window-start WINDOW), so if calling this function | |
| 3240 in a program gives strange scrolling, make sure the window-start | |
| 3241 value is reasonable when this function is called. | |
| 3242 */ | |
| 3243 (window)) | |
| 3244 { | |
| 3245 struct window *w = decode_window (window); | |
| 1207 | 3246 struct buffer *b; |
| 665 | 3247 Charbpos start_pos; |
| 428 | 3248 int old_top = WINDOW_TOP (w); |
| 3249 | |
| 1207 | 3250 if (NILP (WINDOW_BUFFER (w))) |
| 3251 invalid_operation ("Can't delete other windows of combination", window); | |
| 3252 | |
| 793 | 3253 window = wrap_window (w); |
| 1207 | 3254 b = XBUFFER (WINDOW_BUFFER (w)); |
| 428 | 3255 |
| 3256 if (MINI_WINDOW_P (w) && old_top > 0) | |
| 563 | 3257 invalid_operation ("Can't expand minibuffer to full frame", Qunbound); |
| 428 | 3258 |
| 3259 /* Ignore dedicated windows. */ | |
| 3260 window_loop (DELETE_OTHER_WINDOWS, window, 0, w->frame, 0, Qnil); | |
| 3261 | |
| 3262 start_pos = marker_position (w->start[CURRENT_DISP]); | |
| 3263 | |
| 3264 /* Try to minimize scrolling, by setting the window start to the | |
| 3265 point which will cause the text at the old window start to be at | |
| 3266 the same place on the frame. But don't try to do this if the | |
| 3267 window start is outside the visible portion (as might happen when | |
| 3268 the display is not current, due to typeahead). */ | |
| 3269 if (start_pos >= BUF_BEGV (b) && start_pos <= BUF_ZV (b) | |
| 3270 && !MINI_WINDOW_P (w)) | |
| 3271 { | |
| 665 | 3272 Charbpos new_start = start_with_line_at_pixpos (w, start_pos, old_top); |
| 428 | 3273 |
| 3274 if (new_start >= BUF_BEGV (b) && new_start <= BUF_ZV (b)) | |
| 3275 { | |
| 3276 Fset_marker (w->start[CURRENT_DISP], make_int (new_start), | |
| 3277 w->buffer); | |
| 3278 w->start_at_line_beg = beginning_of_line_p (b, new_start); | |
| 3279 } | |
| 3280 /* We need to do this, so that the window-scroll-functions | |
| 3281 get called. */ | |
| 3282 w->force_start = 1; | |
| 3283 } | |
| 3284 | |
| 3285 return Qnil; | |
| 3286 } | |
| 3287 | |
| 3288 DEFUN ("delete-windows-on", Fdelete_windows_on, 1, 3, | |
| 3289 "bDelete windows on (buffer): ", /* | |
| 3290 Delete all windows showing BUFFER. | |
| 444 | 3291 |
| 3292 Optional second argument WHICH-FRAMES controls which frames are affected. | |
| 428 | 3293 If nil or omitted, delete all windows showing BUFFER in any frame. |
| 3294 If t, delete only windows showing BUFFER in the selected frame. | |
| 3295 If `visible', delete all windows showing BUFFER in any visible frame. | |
| 3296 If a frame, delete only windows showing BUFFER in that frame. | |
| 444 | 3297 Warning: WHICH-FRAMES has the same meaning as with `next-window', |
| 3298 except that the meanings of nil and t are reversed. | |
| 3299 | |
| 3300 The optional third argument WHICH-DEVICES further clarifies on which | |
| 3301 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 3302 is only meaningful if WHICH-FRAMES is not t. | |
| 3303 If nil or omitted, search only the selected console. | |
| 3304 If a device, only search that device. | |
| 3305 If a console, search all devices on that console. | |
| 3306 If a device type, search all devices of that type. | |
| 3307 If `window-system', search all devices on a window system. | |
| 3308 Any other non-nil value means search all devices. | |
| 428 | 3309 */ |
| 444 | 3310 (buffer, which_frames, which_devices)) |
| 428 | 3311 { |
| 3312 /* This function can GC */ | |
| 444 | 3313 buffer = Fget_buffer (buffer); |
| 3314 CHECK_BUFFER (buffer); | |
| 3315 | |
| 3316 /* WHICH-FRAMES values t and nil mean the opposite of what | |
| 3317 window_loop expects. */ | |
| 3318 if (EQ (which_frames, Qnil)) | |
| 3319 which_frames = Qt; | |
| 3320 else if (EQ (which_frames, Qt)) | |
| 3321 which_frames = Qnil; | |
| 3322 | |
| 3323 /* Ignore dedicated windows. */ | |
| 3324 window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, | |
| 3325 which_frames, 0, which_devices); | |
| 428 | 3326 return Qnil; |
| 3327 } | |
| 3328 | |
| 448 | 3329 static Lisp_Object |
| 3330 list_windows (struct window *w, Lisp_Object value) | |
| 3331 { | |
| 3332 for (;;) | |
| 3333 { | |
| 3334 if (!NILP (w->hchild)) | |
| 3335 value = list_windows (XWINDOW (w->hchild), value); | |
| 3336 else if (!NILP (w->vchild)) | |
| 3337 value = list_windows (XWINDOW (w->vchild), value); | |
| 3338 else | |
| 3339 { | |
| 793 | 3340 Lisp_Object window = wrap_window (w); |
| 3341 | |
| 448 | 3342 value = Fcons (window, value); |
| 3343 } | |
| 3344 if (NILP (w->next)) | |
| 3345 break; | |
| 3346 w = XWINDOW (w->next); | |
| 3347 } | |
| 3348 return value; | |
| 3349 } | |
| 3350 | |
| 3351 static Lisp_Object | |
| 3352 list_all_windows (Lisp_Object frame_spec, Lisp_Object device_spec) | |
| 3353 { | |
| 3354 Lisp_Object devcons, concons; | |
| 3355 Lisp_Object retval = Qnil; | |
| 3356 | |
| 3357 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 3358 { | |
| 3359 Lisp_Object frame_list, the_window; | |
| 3360 Lisp_Object device, tail; | |
| 3361 | |
| 3362 device = XCAR (devcons); | |
| 3363 frame_list = DEVICE_FRAME_LIST (XDEVICE (device)); | |
| 3364 | |
| 3365 LIST_LOOP (tail, frame_list) | |
| 3366 { | |
| 3367 if ((NILP (frame_spec) | |
| 3368 && !EQ (XCAR (tail), DEVICE_SELECTED_FRAME (XDEVICE (device)))) | |
| 3369 || (EQ (frame_spec, Qvisible) | |
| 3370 && !FRAME_VISIBLE_P (XFRAME (XCAR (tail)))) | |
| 3371 || (FRAMEP (frame_spec) | |
| 3372 && !EQ (frame_spec, XCAR (tail))) | |
| 3373 || (!NILP (frame_spec) | |
| 3374 && !device_matches_device_spec (device, | |
| 3375 NILP (device_spec) ? | |
| 3376 Vselected_console : | |
| 3377 device_spec))) | |
| 3378 continue; | |
| 3379 the_window = FRAME_ROOT_WINDOW (XFRAME (XCAR (tail))); | |
| 3380 retval = list_windows (XWINDOW (the_window), retval); | |
| 3381 } | |
| 3382 } | |
| 3383 return Fnreverse (retval); | |
| 3384 } | |
| 3385 | |
| 444 | 3386 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, 1, 3, |
| 428 | 3387 "bReplace buffer in windows: ", /* |
| 3388 Replace BUFFER with some other buffer in all windows showing it. | |
| 444 | 3389 |
| 3390 Optional second argument WHICH-FRAMES controls which frames are affected. | |
| 3391 If nil or omitted, all frames are affected. | |
| 3392 If t, only the selected frame is affected. | |
| 3393 If `visible', all visible frames are affected. | |
| 3394 If a frame, only that frame is affected. | |
| 3395 Warning: WHICH-FRAMES has the same meaning as with `next-window', | |
| 3396 except that the meanings of nil and t are reversed. | |
| 3397 | |
| 3398 The optional third argument WHICH-DEVICES further clarifies on which | |
| 3399 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 3400 is only meaningful if WHICH-FRAMES is not t. | |
| 3401 If nil or omitted, search only the selected console. | |
| 3402 If a device, only search that device. | |
| 3403 If a console, search all devices on that console. | |
| 3404 If a device type, search all devices of that type. | |
| 3405 If `window-system', search all devices on a window system. | |
| 3406 Any other non-nil value means search all devices. | |
| 428 | 3407 */ |
| 444 | 3408 (buffer, which_frames, which_devices)) |
| 428 | 3409 { |
| 3410 /* This function can GC */ | |
| 448 | 3411 Lisp_Object window_list; |
| 3412 Lisp_Object tail; | |
| 3413 struct gcpro gcpro1, gcpro2; | |
| 3414 | |
| 444 | 3415 if (EQ (which_frames, Qnil)) |
| 3416 which_frames = Qt; | |
| 3417 else if (EQ (which_frames, Qt)) | |
| 3418 which_frames = Qnil; | |
| 448 | 3419 window_list = list_all_windows (which_frames, which_devices); |
| 3420 | |
| 3421 buffer = Fget_buffer (buffer); | |
| 3422 CHECK_BUFFER (buffer); | |
| 3423 | |
| 3424 GCPRO2 (window_list, buffer); | |
| 3425 LIST_LOOP (tail, window_list) | |
| 3426 { | |
| 3427 Lisp_Object window = XCAR (tail); | |
| 3428 if (!MINI_WINDOW_P (XWINDOW (window)) | |
| 3429 && EQ (XWINDOW (window)->buffer, buffer)) | |
| 3430 { | |
| 3431 Lisp_Object another_buffer = Fother_buffer (buffer, Qnil, Qnil); | |
| 3432 Lisp_Object frame = WINDOW_FRAME (XWINDOW (window)); | |
| 3433 if (NILP (another_buffer)) | |
| 3434 another_buffer = Fget_buffer_create (QSscratch); | |
| 3435 if (!NILP (XWINDOW (window)->dedicated) | |
| 3436 && EQ (window, | |
| 3437 FRAME_ROOT_WINDOW (XFRAME (frame))) | |
| 1979 | 3438 && (allow_deletion_of_last_visible_frame |
| 3439 || other_visible_frames (XFRAME (frame)))) | |
| 448 | 3440 { |
| 3441 delete_frame_internal (XFRAME (frame), 0, 0, 0); /* GC */ | |
| 3442 } | |
| 3443 else | |
| 3444 { | |
| 3445 Fset_window_buffer (window, another_buffer, Qnil); | |
| 3446 if (EQ (window, Fselected_window (Qnil))) | |
| 3447 Fset_buffer (XWINDOW (window)->buffer); | |
| 3448 } | |
| 3449 } | |
| 3450 } | |
| 3451 UNGCPRO; | |
| 428 | 3452 return Qnil; |
| 3453 } | |
| 3454 | |
| 3455 /* The smallest acceptable dimensions for a window. Anything smaller | |
| 3456 might crash Emacs. */ | |
| 3457 #define MIN_SAFE_WINDOW_WIDTH (2) | |
| 3458 #define MIN_SAFE_WINDOW_HEIGHT (2) | |
| 3459 | |
| 3460 /* Make sure that window_min_height and window_min_width are | |
| 3461 not too small; if they are, set them to safe minima. */ | |
| 3462 | |
| 3463 static void | |
| 3464 check_min_window_sizes (void) | |
| 3465 { | |
| 3466 /* Smaller values might permit a crash. */ | |
| 3467 if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
| 3468 window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
| 3469 if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
| 3470 window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
| 3471 } | |
| 3472 | |
| 440 | 3473 static int |
| 3474 frame_min_height (struct frame *frame) | |
| 3475 { | |
| 3476 /* For height, we have to see whether the frame has a minibuffer, and | |
| 3477 whether it wants a modeline. */ | |
| 3478 return (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 | |
| 3479 : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
| 3480 : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); | |
| 3481 } | |
| 3482 | |
| 3483 /* Return non-zero if both frame sizes are less than or equal to | |
| 3484 minimal allowed values. ROWS and COLS are in characters */ | |
| 3485 int | |
| 3486 frame_size_valid_p (struct frame *frame, int rows, int cols) | |
| 3487 { | |
| 3488 return (rows >= frame_min_height (frame) | |
| 3489 && cols >= MIN_SAFE_WINDOW_WIDTH); | |
| 3490 } | |
| 3491 | |
| 3492 /* Return non-zero if both frame sizes are less than or equal to | |
| 3493 minimal allowed values. WIDTH and HEIGHT are in pixels */ | |
| 3494 int | |
| 3495 frame_pixsize_valid_p (struct frame *frame, int width, int height) | |
| 3496 { | |
| 3497 int rows, cols; | |
| 3498 pixel_to_real_char_size (frame, width, height, &cols, &rows); | |
| 3499 return frame_size_valid_p (frame, rows, cols); | |
| 3500 } | |
| 3501 | |
| 428 | 3502 /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
| 3503 minimum allowable size. */ | |
| 3504 void | |
| 3505 check_frame_size (struct frame *frame, int *rows, int *cols) | |
| 3506 { | |
| 440 | 3507 int min_height = frame_min_height (frame); |
| 428 | 3508 |
| 3509 if (*rows < min_height) | |
| 3510 *rows = min_height; | |
| 3511 if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
| 3512 *cols = MIN_SAFE_WINDOW_WIDTH; | |
| 3513 } | |
| 3514 | |
| 3515 /* Normally the window is deleted if it gets too small. | |
| 3516 nodelete nonzero means do not do this. | |
| 3517 (The caller should check later and do so if appropriate) */ | |
| 3518 static void | |
| 3519 set_window_pixsize (Lisp_Object window, int new_pixsize, int nodelete, | |
| 3520 int set_height) | |
| 3521 { | |
| 3522 struct window *w = XWINDOW (window); | |
| 3523 struct frame *f = XFRAME (w->frame); | |
| 3524 struct window *c; | |
| 3525 int old_pixsize = (set_height ? WINDOW_HEIGHT (w) : WINDOW_WIDTH (w)); | |
| 3526 Lisp_Object child, minor_kid, major_kid; | |
| 3527 int minsize; | |
| 3528 int line_size; | |
| 3529 int defheight, defwidth; | |
| 3530 | |
| 3531 default_face_height_and_width (window, &defheight, &defwidth); | |
| 3532 line_size = (set_height ? defheight : defwidth); | |
| 3533 | |
| 3534 check_min_window_sizes (); | |
| 3535 | |
| 3536 minsize = (set_height ? window_min_height : window_min_width); | |
| 3537 minsize *= line_size; | |
| 3538 | |
| 3539 if (!nodelete | |
| 3540 && !TOP_LEVEL_WINDOW_P (w) | |
|
4375
74e0e1131e01
Update window-size computation.
Mike Sperber <sperber@deinprogramm.de>
parents:
3707
diff
changeset
|
3541 && (new_pixsize + window_modeline_height (w)) < minsize) |
| 428 | 3542 { |
| 3543 Fdelete_window (window, Qnil); | |
| 3544 return; | |
| 3545 } | |
| 3546 | |
| 3547 SET_LAST_MODIFIED (w, 0); | |
| 3548 SET_LAST_FACECHANGE (w); | |
| 3549 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); /* multiple windows affected */ | |
| 3550 if (set_height) | |
| 3551 { | |
| 3552 WINDOW_HEIGHT (w) = new_pixsize; | |
| 3553 major_kid = w->vchild; | |
| 3554 minor_kid = w->hchild; | |
| 3555 } | |
| 3556 else | |
| 3557 { | |
| 3558 WINDOW_WIDTH (w) = new_pixsize; | |
| 3559 major_kid = w->hchild; | |
| 3560 minor_kid = w->vchild; | |
| 3561 } | |
| 3562 | |
| 3563 if (!NILP (minor_kid)) | |
| 3564 { | |
| 3565 for (child = minor_kid; !NILP (child); child = XWINDOW (child)->next) | |
| 3566 { | |
| 3567 if (set_height) | |
| 3568 WINDOW_TOP (XWINDOW (child)) = WINDOW_TOP (w); | |
| 3569 else | |
| 3570 WINDOW_LEFT (XWINDOW (child)) = WINDOW_LEFT (w); | |
| 3571 | |
| 3572 set_window_pixsize (child, new_pixsize, nodelete, set_height); | |
| 3573 } | |
| 3574 } | |
| 3575 else if (!NILP (major_kid)) | |
| 3576 { | |
| 3577 int last_pos, last_old_pos, pos, old_pos, first; | |
| 3578 int pixel_adj_left = new_pixsize - old_pixsize; | |
| 3579 int div_val = old_pixsize << 1; | |
| 3580 | |
| 3581 /* | |
| 3582 * Previously we bailed out here if there was no size change. | |
| 3583 * (pixel_adj_left == 0) But this broke toolbar updates. If a | |
| 3584 * toolbar appears or disappears, windows may not change size, | |
| 3585 * but their top and left coordinates need to be updated. | |
| 3586 * | |
| 3587 * So we don't bail until after the loop below. | |
| 3588 */ | |
| 3589 | |
| 3590 last_pos = first = (set_height ? WINDOW_TOP (w) : WINDOW_LEFT (w)); | |
| 3591 last_old_pos = 0; | |
| 3592 | |
| 3593 for (child = major_kid; !NILP (child); child = c->next) | |
| 3594 { | |
| 3595 c = XWINDOW (child); | |
| 3596 | |
| 3597 if (set_height) | |
| 3598 { | |
| 3599 old_pos = last_old_pos + WINDOW_HEIGHT (c); | |
| 3600 WINDOW_TOP (c) = last_pos; | |
| 3601 } | |
| 3602 else | |
| 3603 { | |
| 3604 old_pos = last_old_pos + WINDOW_WIDTH (c); | |
| 3605 WINDOW_LEFT (c) = last_pos; | |
| 3606 } | |
| 3607 | |
| 3608 pos = (((old_pos * new_pixsize) << 1) + old_pixsize) / div_val; | |
| 3609 /* All but the last window should have a height which is | |
| 3610 a multiple of the default line height. */ | |
| 3611 if (!NILP (c->next)) | |
|
4446
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3612 { |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3613 /* |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3614 * Round up when we're shrinking, down when we're growing |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3615 * to make sure that pairs of grow / shrink meant to |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3616 * cancel out actually do cancel out. |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3617 */ |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3618 if (pixel_adj_left < 0) |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3619 pos = ((pos + line_size -1) / line_size) * line_size; |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3620 else |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3621 pos = (pos / line_size) * line_size; |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3622 } |
| 428 | 3623 |
| 3624 /* Avoid confusion: don't delete child if it becomes too small */ | |
| 3625 set_window_pixsize (child, pos + first - last_pos, 1, set_height); | |
| 3626 | |
| 3627 last_pos = pos + first; | |
| 3628 last_old_pos = old_pos; | |
| 3629 } | |
| 3630 | |
| 3631 /* Sometimes we may get called with our old size. In that case | |
| 3632 we don't need to do anything else. */ | |
| 3633 if (!pixel_adj_left) | |
| 3634 return; | |
| 3635 | |
| 3636 /* Now delete any children that became too small. */ | |
| 3637 if (!nodelete) | |
| 3638 for (child = major_kid; !NILP (child); child = XWINDOW (child)->next) | |
| 3639 { | |
| 3640 if (set_height) | |
| 3641 set_window_pixheight (child, WINDOW_HEIGHT (XWINDOW (child)), 0); | |
| 3642 else | |
| 3643 set_window_pixwidth (child, WINDOW_WIDTH (XWINDOW (child)), 0); | |
| 3644 } | |
| 3645 } | |
| 3646 } | |
| 3647 | |
| 3648 /* Set the height of WINDOW and all its inferiors. */ | |
| 3649 void | |
| 3650 set_window_pixheight (Lisp_Object window, int new_pixheight, int nodelete) | |
| 3651 { | |
| 3652 set_window_pixsize (window, new_pixheight, nodelete, 1); | |
| 3653 } | |
| 3654 | |
| 3655 /* Recursively set width of WINDOW and its inferiors. */ | |
| 3656 void | |
| 3657 set_window_pixwidth (Lisp_Object window, int new_pixwidth, int nodelete) | |
| 3658 { | |
| 3659 set_window_pixsize (window, new_pixwidth, nodelete, 0); | |
| 3660 } | |
| 3661 | |
| 3662 | |
| 3663 static int window_select_count; | |
| 3664 | |
| 440 | 3665 DEFUN ("set-window-buffer", Fset_window_buffer, 2, 3, 0, /* |
| 428 | 3666 Make WINDOW display BUFFER as its contents. |
| 3667 BUFFER can be a buffer or buffer name. | |
| 440 | 3668 |
| 442 | 3669 With non-nil optional argument NORECORD, do not modify the |
| 440 | 3670 global or per-frame buffer ordering. |
| 428 | 3671 */ |
| 440 | 3672 (window, buffer, norecord)) |
| 428 | 3673 { |
| 3674 Lisp_Object tem; | |
| 3675 struct window *w = decode_window (window); | |
| 448 | 3676 int old_buffer_local_face_property = 0; |
| 428 | 3677 |
| 3678 buffer = Fget_buffer (buffer); | |
| 3679 CHECK_BUFFER (buffer); | |
| 3680 | |
| 3681 if (!BUFFER_LIVE_P (XBUFFER (buffer))) | |
| 563 | 3682 invalid_operation ("Attempt to display deleted buffer", Qunbound); |
| 428 | 3683 |
| 3684 tem = w->buffer; | |
| 3685 if (NILP (tem)) | |
| 563 | 3686 invalid_operation ("Window is deleted", Qunbound); |
| 428 | 3687 else if (EQ (tem, buffer)) |
| 3688 return Qnil; | |
| 3689 else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
| 3690 is first being set up. */ | |
| 3691 { | |
| 3692 if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
| 563 | 3693 signal_error (Qinvalid_operation, "Window is dedicated to buffer", tem); |
| 428 | 3694 |
| 448 | 3695 old_buffer_local_face_property = |
| 3696 XBUFFER (w->buffer)->buffer_local_face_property; | |
| 428 | 3697 unshow_buffer (w); |
| 3698 } | |
| 3699 | |
| 3700 w->buffer = buffer; | |
| 3701 w->window_end_pos[CURRENT_DISP] = 0; | |
| 3702 w->hscroll = 0; | |
| 3703 w->modeline_hscroll = 0; | |
| 844 | 3704 #if 0 /* pre point caches */ |
| 428 | 3705 Fset_marker (w->pointm[CURRENT_DISP], |
| 3706 make_int (BUF_PT (XBUFFER (buffer))), | |
| 3707 buffer); | |
| 3708 set_marker_restricted (w->start[CURRENT_DISP], | |
| 3709 make_int (XBUFFER (buffer)->last_window_start), | |
| 3710 buffer); | |
| 844 | 3711 #else |
| 3712 { | |
| 3713 Lisp_Object marker = Fgethash (buffer, w->saved_point_cache, Qnil); | |
| 3714 Lisp_Object newpoint = | |
| 3715 !NILP (marker) ? make_int (marker_position (marker)) : | |
| 3716 make_int (BUF_PT (XBUFFER (buffer))); | |
| 3717 /* Previously, we had in here set-window-point, which did one of the | |
| 3718 following two, but not both. However, that could result in pointm | |
| 3719 being in a different buffer from the window's buffer! Probably | |
| 3720 not a travesty since it always occurred when the window was | |
| 3721 selected, meaning its value of point was ignored in favor of the | |
| 3722 buffer's; but it tripped an assert() in unshow_buffer(). */ | |
| 3723 set_marker_restricted (w->pointm[CURRENT_DISP], newpoint, buffer); | |
| 3724 if (EQ (wrap_window (w), Fselected_window (Qnil))) | |
| 3725 Fgoto_char (newpoint, buffer); /* this will automatically clip to | |
| 3726 accessible */ | |
| 3727 marker = Fgethash (buffer, w->saved_last_window_start_cache, Qnil); | |
| 3728 set_marker_restricted (w->start[CURRENT_DISP], | |
| 3729 !NILP (marker) ? | |
| 3730 make_int (marker_position (marker)) : | |
| 3731 make_int (XBUFFER (buffer)->last_window_start), | |
| 3732 buffer); | |
| 3733 } | |
| 3734 #endif | |
| 3735 | |
| 428 | 3736 Fset_marker (w->sb_point, w->start[CURRENT_DISP], buffer); |
| 3737 /* set start_at_line_beg correctly. GE */ | |
| 844 | 3738 w->start_at_line_beg = |
| 3739 beginning_of_line_p (XBUFFER (buffer), | |
| 3740 marker_position (w->start[CURRENT_DISP])); | |
| 3741 w->force_start = 0; /* XEmacs fix */ | |
| 428 | 3742 SET_LAST_MODIFIED (w, 1); |
| 3743 SET_LAST_FACECHANGE (w); | |
| 3744 MARK_WINDOWS_CHANGED (w); | |
| 448 | 3745 { |
| 3746 int new_buffer_local_face_property = | |
| 3747 XBUFFER (w->buffer)->buffer_local_face_property; | |
| 3748 | |
| 3749 if (new_buffer_local_face_property | |
| 3750 || new_buffer_local_face_property != old_buffer_local_face_property) | |
| 3751 MARK_WINDOW_FACES_CHANGED (w); | |
| 3752 } | |
| 428 | 3753 recompute_all_cached_specifiers_in_window (w); |
| 3754 if (EQ (window, Fselected_window (Qnil))) | |
| 3755 { | |
| 440 | 3756 if (NILP (norecord)) |
| 3757 Frecord_buffer (buffer); | |
| 3758 | |
| 428 | 3759 Fset_buffer (buffer); |
| 3760 } | |
| 3761 return Qnil; | |
| 3762 } | |
| 3763 | |
| 3764 DEFUN ("select-window", Fselect_window, 1, 2, 0, /* | |
| 3765 Select WINDOW. Most editing will apply to WINDOW's buffer. | |
| 3766 The main editor command loop selects the buffer of the selected window | |
| 3767 before each command. | |
| 3768 | |
| 442 | 3769 With non-nil optional argument NORECORD, do not modify the |
| 428 | 3770 global or per-frame buffer ordering. |
| 3771 */ | |
| 3772 (window, norecord)) | |
| 3773 { | |
| 3774 struct window *w; | |
| 3775 Lisp_Object old_selected_window = Fselected_window (Qnil); | |
| 3776 | |
| 3777 CHECK_LIVE_WINDOW (window); | |
| 3778 w = XWINDOW (window); | |
| 3779 | |
| 3780 /* we have already caught dead-window errors */ | |
| 3781 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 563 | 3782 invalid_operation ("Trying to select non-leaf window", Qunbound); |
| 428 | 3783 |
| 3784 w->use_time = make_int (++window_select_count); | |
| 442 | 3785 |
| 428 | 3786 if (EQ (window, old_selected_window)) |
| 3787 return window; | |
| 3788 | |
| 3789 /* deselect the old window, if it exists (it might not exist if | |
| 3790 the selected device has no frames, which occurs at startup) */ | |
| 3791 if (!NILP (old_selected_window)) | |
| 3792 { | |
| 3793 struct window *ow = XWINDOW (old_selected_window); | |
| 3794 | |
| 3795 Fset_marker (ow->pointm[CURRENT_DISP], | |
| 3796 make_int (BUF_PT (XBUFFER (ow->buffer))), | |
| 3797 ow->buffer); | |
| 3798 | |
| 3799 MARK_WINDOWS_CHANGED (ow); | |
| 3800 } | |
| 3801 | |
| 3802 /* now select the window's frame */ | |
| 3803 set_frame_selected_window (XFRAME (WINDOW_FRAME (w)), window); | |
| 3804 | |
| 3805 select_frame_1 (WINDOW_FRAME (w)); | |
| 3806 | |
| 3807 /* also select the window's buffer */ | |
| 3808 if (NILP (norecord)) | |
| 3809 Frecord_buffer (w->buffer); | |
| 3810 Fset_buffer (w->buffer); | |
| 3811 | |
| 3812 /* Go to the point recorded in the window. | |
| 3813 This is important when the buffer is in more | |
| 3814 than one window. It also matters when | |
| 3815 redisplay_window has altered point after scrolling, | |
| 3816 because it makes the change only in the window. */ | |
| 3817 { | |
| 665 | 3818 Charbpos new_point = marker_position (w->pointm[CURRENT_DISP]); |
| 428 | 3819 if (new_point < BUF_BEGV (current_buffer)) |
| 3820 new_point = BUF_BEGV (current_buffer); | |
| 3821 else if (new_point > BUF_ZV (current_buffer)) | |
| 3822 new_point = BUF_ZV (current_buffer); | |
| 3823 | |
| 3824 BUF_SET_PT (current_buffer, new_point); | |
| 3825 } | |
| 3826 | |
| 3827 MARK_WINDOWS_CHANGED (w); | |
| 3828 | |
| 3829 return window; | |
| 3830 } | |
| 3831 | |
| 3832 Lisp_Object | |
| 3833 display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, | |
| 3834 Lisp_Object override_frame) | |
| 3835 { | |
| 3836 return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); | |
| 3837 } | |
| 3838 | |
| 3839 void | |
| 3840 temp_output_buffer_show (Lisp_Object buf, Lisp_Object same_frame) | |
| 3841 { | |
| 3842 /* This function can GC */ | |
| 3843 Lisp_Object window; | |
| 3844 struct window *w; | |
| 3845 struct buffer *b = XBUFFER (buf); | |
| 3846 | |
| 3847 BUF_SAVE_MODIFF (XBUFFER (buf)) = BUF_MODIFF (b); | |
| 3848 widen_buffer (b, 0); | |
| 3849 BUF_SET_PT (b, BUF_BEG (b)); | |
| 3850 | |
| 3851 if (!NILP (Vtemp_buffer_show_function)) | |
| 3852 call1 (Vtemp_buffer_show_function, buf); | |
| 3853 else | |
| 3854 { | |
| 3855 window = display_buffer (buf, Qnil, same_frame); | |
| 3856 | |
| 3857 if (!EQ (XWINDOW (window)->frame, Fselected_frame (Qnil))) | |
| 3858 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
| 3859 | |
| 3860 Vminibuffer_scroll_window = window; | |
| 3861 w = XWINDOW (window); | |
| 3862 w->hscroll = 0; | |
| 3863 w->modeline_hscroll = 0; | |
| 3864 set_marker_restricted (w->start[CURRENT_DISP], make_int (1), buf); | |
| 3865 set_marker_restricted (w->pointm[CURRENT_DISP], make_int (1), buf); | |
| 3866 set_marker_restricted (w->sb_point, make_int (1), buf); | |
| 3867 } | |
| 3868 } | |
| 3869 | |
| 3870 static void | |
| 3871 make_dummy_parent (Lisp_Object window) | |
| 3872 { | |
| 3025 | 3873 Lisp_Object new_; |
| 428 | 3874 struct window *o = XWINDOW (window); |
| 3017 | 3875 struct window *p = ALLOC_LCRECORD_TYPE (struct window, &lrecord_window); |
| 428 | 3876 |
| 3025 | 3877 new_ = wrap_window (p); |
| 3017 | 3878 COPY_LCRECORD (p, o); |
| 428 | 3879 |
| 3880 /* Don't copy the pointers to the line start cache or the face | |
| 3881 instances. */ | |
| 3882 p->line_start_cache = Dynarr_new (line_start_cache); | |
| 3092 | 3883 #ifdef NEW_GC |
| 3884 p->face_cachels = Dynarr_lisp_new (face_cachel, | |
| 3885 &lrecord_face_cachel_dynarr, | |
| 3886 &lrecord_face_cachel); | |
| 3887 p->glyph_cachels = Dynarr_lisp_new (glyph_cachel, | |
| 3888 &lrecord_glyph_cachel_dynarr, | |
| 3889 &lrecord_glyph_cachel); | |
| 3890 #else /* not NEW_GC */ | |
| 428 | 3891 p->face_cachels = Dynarr_new (face_cachel); |
| 3892 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
| 3092 | 3893 #endif /* not NEW_GC */ |
| 442 | 3894 p->subwindow_instance_cache = |
| 450 | 3895 make_image_instance_cache_hash_table (); |
| 428 | 3896 |
| 3897 /* Put new into window structure in place of window */ | |
| 3025 | 3898 replace_window (window, new_); |
| 428 | 3899 |
| 3900 o->next = Qnil; | |
| 3901 o->prev = Qnil; | |
| 3902 o->vchild = Qnil; | |
| 3903 o->hchild = Qnil; | |
| 3025 | 3904 o->parent = new_; |
| 428 | 3905 |
| 3906 p->start[CURRENT_DISP] = Qnil; | |
| 3907 p->start[DESIRED_DISP] = Qnil; | |
| 3908 p->start[CMOTION_DISP] = Qnil; | |
| 3909 p->pointm[CURRENT_DISP] = Qnil; | |
| 3910 p->pointm[DESIRED_DISP] = Qnil; | |
| 3911 p->pointm[CMOTION_DISP] = Qnil; | |
| 3912 p->sb_point = Qnil; | |
| 844 | 3913 p->saved_point_cache = make_saved_buffer_point_cache (); |
| 3914 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
| 428 | 3915 p->buffer = Qnil; |
| 3916 } | |
| 3917 | |
| 3918 DEFUN ("split-window", Fsplit_window, 0, 3, "", /* | |
| 3919 Split WINDOW, putting SIZE lines in the first of the pair. | |
| 444 | 3920 WINDOW defaults to the selected one and SIZE to half its size. |
| 707 | 3921 If optional third arg HORFLAG is non-nil, split side by side and put |
| 3922 SIZE columns in the first of the pair. The newly created window is | |
| 3923 returned. | |
| 428 | 3924 */ |
| 444 | 3925 (window, size, horflag)) |
| 428 | 3926 { |
| 3025 | 3927 Lisp_Object new_; |
| 428 | 3928 struct window *o, *p; |
| 3929 struct frame *f; | |
| 444 | 3930 int csize; |
| 428 | 3931 int psize; |
| 3932 | |
| 3933 if (NILP (window)) | |
| 3934 window = Fselected_window (Qnil); | |
| 3935 else | |
| 3936 CHECK_LIVE_WINDOW (window); | |
| 3937 | |
| 3938 o = XWINDOW (window); | |
| 3939 f = XFRAME (WINDOW_FRAME (o)); | |
| 3940 | |
| 444 | 3941 if (NILP (size)) |
| 428 | 3942 { |
| 3943 if (!NILP (horflag)) | |
| 3944 /* In the new scheme, we are symmetric with respect to separators | |
| 3945 so there is no need to do weird things here. */ | |
| 3946 { | |
| 956 | 3947 psize = (WINDOW_WIDTH (o) + window_divider_width (o)) >> 1; |
| 444 | 3948 csize = window_pixel_width_to_char_width (o, psize, 0); |
| 428 | 3949 } |
| 3950 else | |
| 3951 { | |
| 3952 psize = WINDOW_HEIGHT (o) >> 1; | |
| 444 | 3953 csize = window_pixel_height_to_char_height (o, psize, 1); |
| 428 | 3954 } |
| 3955 } | |
| 3956 else | |
| 3957 { | |
| 444 | 3958 CHECK_INT (size); |
| 3959 csize = XINT (size); | |
| 428 | 3960 if (!NILP (horflag)) |
| 444 | 3961 psize = window_char_width_to_pixel_width (o, csize, 0); |
| 428 | 3962 else |
| 444 | 3963 psize = window_char_height_to_pixel_height (o, csize, 1); |
| 428 | 3964 } |
| 3965 | |
| 3966 if (MINI_WINDOW_P (o)) | |
| 563 | 3967 invalid_operation ("Attempt to split minibuffer window", Qunbound); |
| 428 | 3968 else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
| 563 | 3969 invalid_operation ("Attempt to split unsplittable frame", Qunbound); |
| 428 | 3970 |
| 3971 check_min_window_sizes (); | |
| 3972 | |
| 3973 if (NILP (horflag)) | |
| 3974 { | |
| 444 | 3975 if (csize < window_min_height) |
| 563 | 3976 signal_error (Qinvalid_operation, "Window height too small (after splitting)", make_int (csize)); |
| 444 | 3977 if (csize + window_min_height > window_char_height (o, 1)) |
| 563 | 3978 signal_error (Qinvalid_operation, "Window height too small (after splitting)", |
| 3979 make_int (window_char_height (o, 1) - csize)); | |
| 428 | 3980 if (NILP (o->parent) |
| 3981 || NILP (XWINDOW (o->parent)->vchild)) | |
| 3982 { | |
| 3983 make_dummy_parent (window); | |
| 448 | 3984 #if 0 |
| 3985 /* #### I can't understand why you have to reset face | |
| 3986 cachels here. This can cause crash so let's disable it | |
| 3987 and see the difference. See redisplay-tests.el --yh */ | |
| 428 | 3988 reset_face_cachels (XWINDOW (window)); |
| 448 | 3989 #endif |
| 3025 | 3990 new_ = o->parent; |
| 3991 XWINDOW (new_)->vchild = window; | |
| 428 | 3992 XFRAME (o->frame)->mirror_dirty = 1; |
| 3993 } | |
| 3994 } | |
| 3995 else | |
| 3996 { | |
| 444 | 3997 if (csize < window_min_width) |
| 563 | 3998 signal_error (Qinvalid_operation, "Window width too small (after splitting)", make_int (csize)); |
| 444 | 3999 if (csize + window_min_width > window_char_width (o, 0)) |
| 563 | 4000 signal_error (Qinvalid_operation, "Window width too small (after splitting)", |
| 4001 make_int (window_char_width (o, 0) - csize)); | |
| 428 | 4002 if (NILP (o->parent) |
| 4003 || NILP (XWINDOW (o->parent)->hchild)) | |
| 4004 { | |
| 4005 make_dummy_parent (window); | |
| 448 | 4006 #if 0 |
| 4007 /* #### See above. */ | |
| 428 | 4008 reset_face_cachels (XWINDOW (window)); |
| 448 | 4009 #endif |
| 3025 | 4010 new_ = o->parent; |
| 4011 XWINDOW (new_)->hchild = window; | |
| 428 | 4012 XFRAME (o->frame)->mirror_dirty = 1; |
| 4013 } | |
| 4014 } | |
| 4015 | |
| 4016 /* Now we know that window's parent is a vertical combination | |
| 4017 if we are dividing vertically, or a horizontal combination | |
| 4018 if we are making side-by-side windows */ | |
| 4019 | |
| 4020 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 3025 | 4021 new_ = allocate_window (); |
| 4022 p = XWINDOW (new_); | |
| 428 | 4023 |
| 4024 p->frame = o->frame; | |
| 4025 p->next = o->next; | |
| 4026 if (!NILP (p->next)) | |
| 3025 | 4027 XWINDOW (p->next)->prev = new_; |
| 428 | 4028 p->prev = window; |
| 3025 | 4029 o->next = new_; |
| 428 | 4030 p->parent = o->parent; |
| 4031 p->buffer = Qt; | |
| 4032 | |
| 4033 reset_face_cachels (p); | |
| 4034 reset_glyph_cachels (p); | |
| 4035 | |
| 4036 | |
| 4037 /* Apportion the available frame space among the two new windows */ | |
| 4038 | |
| 4039 if (!NILP (horflag)) | |
| 4040 { | |
| 4041 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
| 4042 WINDOW_TOP (p) = WINDOW_TOP (o); | |
| 4043 WINDOW_WIDTH (p) = WINDOW_WIDTH (o) - psize; | |
| 4044 WINDOW_WIDTH (o) = psize; | |
| 4045 WINDOW_LEFT (p) = WINDOW_LEFT (o) + psize; | |
| 4046 } | |
| 4047 else | |
| 4048 { | |
| 4049 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
| 4050 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
| 4051 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o) - psize; | |
| 4052 WINDOW_HEIGHT (o) = psize; | |
| 4053 WINDOW_TOP (p) = WINDOW_TOP (o) + psize; | |
| 4054 } | |
| 4055 | |
| 4056 XFRAME (p->frame)->mirror_dirty = 1; | |
| 853 | 4057 |
| 3025 | 4058 note_object_created (new_); |
| 853 | 4059 |
| 428 | 4060 /* do this last (after the window is completely initialized and |
| 4061 the mirror-dirty flag is set) so that specifier recomputation | |
| 4062 caused as a result of this will work properly and not abort. */ | |
| 3025 | 4063 Fset_window_buffer (new_, o->buffer, Qt); |
| 4064 return new_; | |
| 428 | 4065 } |
| 4066 | |
| 4067 | |
| 4068 DEFUN ("enlarge-window", Fenlarge_window, 1, 3, "_p", /* | |
| 444 | 4069 Make the selected window COUNT lines taller. |
| 4070 From program, optional second arg HORIZONTALP non-nil means grow | |
| 4071 sideways COUNT columns, and optional third arg WINDOW specifies the | |
| 4072 window to change instead of the selected window. | |
| 428 | 4073 */ |
| 444 | 4074 (count, horizontalp, window)) |
| 4075 { | |
| 4076 CHECK_INT (count); | |
| 4077 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 0); | |
| 428 | 4078 return Qnil; |
| 4079 } | |
| 4080 | |
| 4081 DEFUN ("enlarge-window-pixels", Fenlarge_window_pixels, 1, 3, "_p", /* | |
| 444 | 4082 Make the selected window COUNT pixels taller. |
| 4083 From program, optional second arg HORIZONTALP non-nil means grow | |
| 4084 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
| 4085 window to change instead of the selected window. | |
| 428 | 4086 */ |
| 444 | 4087 (count, horizontalp, window)) |
| 4088 { | |
| 4089 CHECK_INT (count); | |
| 4090 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 1); | |
| 428 | 4091 return Qnil; |
| 4092 } | |
| 4093 | |
| 4094 DEFUN ("shrink-window", Fshrink_window, 1, 3, "_p", /* | |
| 444 | 4095 Make the selected window COUNT lines shorter. |
| 4096 From program, optional second arg HORIZONTALP non-nil means shrink | |
| 4097 sideways COUNT columns, and optional third arg WINDOW specifies the | |
| 4098 window to change instead of the selected window. | |
| 428 | 4099 */ |
| 444 | 4100 (count, horizontalp, window)) |
| 4101 { | |
| 4102 CHECK_INT (count); | |
| 4103 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 0); | |
| 428 | 4104 return Qnil; |
| 4105 } | |
| 4106 | |
| 4107 DEFUN ("shrink-window-pixels", Fshrink_window_pixels, 1, 3, "_p", /* | |
| 444 | 4108 Make the selected window COUNT pixels smaller. |
| 4109 From program, optional second arg HORIZONTALP non-nil means shrink | |
| 4110 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
| 4111 window to change instead of the selected window. | |
| 428 | 4112 */ |
| 444 | 4113 (count, horizontalp, window)) |
| 4114 { | |
| 4115 CHECK_INT (count); | |
| 4116 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 1); | |
| 428 | 4117 return Qnil; |
| 4118 } | |
| 4119 | |
| 4120 static int | |
| 4121 window_pixel_height_to_char_height (struct window *w, int pixel_height, | |
| 4122 int include_gutters_p) | |
| 4123 { | |
| 4124 int avail_height; | |
| 4125 int defheight, defwidth; | |
| 3687 | 4126 int char_height = 0; |
| 793 | 4127 Lisp_Object window = wrap_window (w); |
| 4128 | |
| 428 | 4129 |
| 4130 avail_height = (pixel_height - | |
| 4131 (include_gutters_p ? 0 : | |
| 442 | 4132 window_top_window_gutter_height (w) + |
| 4133 window_bottom_window_gutter_height (w))); | |
| 428 | 4134 |
| 4135 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4136 | |
| 3687 | 4137 if (defheight) |
| 4138 char_height = avail_height / defheight; | |
| 428 | 4139 |
| 4140 /* It's the calling function's responsibility to check these values | |
| 4141 and make sure they're not out of range. | |
| 4142 | |
| 4143 #### We need to go through the calling functions and actually | |
| 4144 do this. */ | |
| 4145 return max (0, char_height); | |
| 4146 } | |
| 4147 | |
| 4148 static int | |
| 4149 window_char_height_to_pixel_height (struct window *w, int char_height, | |
| 4150 int include_gutters_p) | |
| 4151 { | |
| 4152 int avail_height; | |
| 4153 int defheight, defwidth; | |
| 4154 int pixel_height; | |
| 4155 | |
| 793 | 4156 Lisp_Object window = wrap_window (w); |
| 4157 | |
| 428 | 4158 |
| 4159 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4160 | |
| 4161 avail_height = char_height * defheight; | |
| 4162 pixel_height = (avail_height + | |
| 4163 (include_gutters_p ? 0 : | |
| 442 | 4164 window_top_window_gutter_height (w) + |
| 4165 window_bottom_window_gutter_height (w))); | |
| 428 | 4166 |
| 4167 /* It's the calling function's responsibility to check these values | |
| 4168 and make sure they're not out of range. | |
| 4169 | |
| 4170 #### We need to go through the calling functions and actually | |
| 4171 do this. */ | |
| 4172 return max (0, pixel_height); | |
| 4173 } | |
| 4174 | |
| 4175 /* Return number of default lines of text can fit in the window W. | |
| 4176 If INCLUDE_GUTTERS_P is 1, include "gutter" space (modeline plus | |
| 4177 horizontal scrollbar) in the space that is used for the calculation. | |
| 442 | 4178 This doesn't include space used by the frame gutters. |
| 428 | 4179 */ |
| 4180 int | |
| 4181 window_char_height (struct window *w, int include_gutters_p) | |
| 4182 { | |
| 442 | 4183 return window_pixel_height_to_char_height (w, window_pixel_height (w), |
| 428 | 4184 include_gutters_p); |
| 4185 } | |
| 4186 | |
| 4187 /* | |
| 4188 * Return number of lines currently displayed in window w. If | |
| 4189 * end-of-buffer is displayed then the area below end-of-buffer is assume | |
| 4190 * to be blank lines of default height. | |
| 4191 * Does not include the modeline. | |
| 4192 */ | |
| 4193 int | |
| 4194 window_displayed_height (struct window *w) | |
| 4195 { | |
| 4196 struct buffer *b = XBUFFER (w->buffer); | |
| 4197 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 4198 int num_lines; | |
| 4199 Charcount end_pos = (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b) | |
| 4200 ? -1 | |
| 4201 : w->window_end_pos[CURRENT_DISP]); | |
| 4202 | |
| 4203 if (!Dynarr_length (dla)) | |
| 4204 return window_char_height (w, 0); | |
| 4205 | |
| 4206 num_lines = Dynarr_length (dla); | |
| 4207 | |
| 4208 /* #### Document and assert somewhere that w->window_end_pos == -1 | |
| 4209 indicates that end-of-buffer is being displayed. */ | |
| 4210 if (end_pos == -1) | |
| 4211 { | |
| 4967 | 4212 struct display_line *dl = Dynarr_begin (dla); |
| 428 | 4213 int ypos1 = dl->ypos + dl->descent; |
| 4214 int ypos2 = WINDOW_TEXT_BOTTOM (w); | |
| 4215 Lisp_Object window; | |
| 4216 int defheight, defwidth; | |
| 4217 | |
| 793 | 4218 window = wrap_window (w); |
| 428 | 4219 |
| 4220 if (dl->modeline) | |
| 4221 { | |
| 4222 num_lines--; | |
| 4223 | |
| 4224 if (Dynarr_length (dla) == 1) | |
| 4225 ypos1 = WINDOW_TEXT_TOP (w); | |
| 4226 else | |
| 4227 { | |
| 4228 dl = Dynarr_atp (dla, Dynarr_length (dla) - 1); | |
| 4229 /* If this line is clipped then we know that there is no | |
| 4230 blank room between eob and the modeline. If we are | |
| 4231 scrolling on clipped lines just know off the clipped | |
| 4232 line and return .*/ | |
| 4233 if (scroll_on_clipped_lines && dl->clip) | |
| 4234 return num_lines - 1; | |
| 4235 ypos1 = dl->ypos + dl->descent - dl->clip; | |
| 4236 } | |
| 4237 } | |
| 4238 | |
| 4239 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4240 /* #### This probably needs to know about the clipping area once a | |
| 4241 final definition is decided on. */ | |
| 3707 | 4242 if (defheight) |
| 4243 num_lines += ((ypos2 - ypos1) / defheight); | |
| 428 | 4244 } |
| 4245 else | |
| 4246 { | |
| 4967 | 4247 if (num_lines > 1 && Dynarr_begin (dla)->modeline) |
| 428 | 4248 num_lines--; |
| 4249 | |
| 4250 if (scroll_on_clipped_lines | |
| 4251 && Dynarr_atp (dla, Dynarr_length (dla) - 1)->clip) | |
| 4252 num_lines--; | |
| 4253 } | |
| 4254 | |
| 4255 return num_lines; | |
| 4256 } | |
| 4257 | |
| 4258 static int | |
| 4259 window_pixel_width (Lisp_Object window) | |
| 4260 { | |
| 4261 return WINDOW_WIDTH (XWINDOW (window)); | |
| 4262 } | |
| 4263 | |
| 442 | 4264 /* Calculate the pixel of a window, optionally including margin space |
| 4265 but no vertical gutters. */ | |
| 428 | 4266 static int |
| 4267 window_pixel_width_to_char_width (struct window *w, int pixel_width, | |
| 4268 int include_margins_p) | |
| 4269 { | |
| 4270 int avail_width; | |
| 3676 | 4271 int char_width = 0; |
| 428 | 4272 int defheight, defwidth; |
| 793 | 4273 Lisp_Object window = wrap_window (w); |
| 4274 | |
| 428 | 4275 |
| 4276 avail_width = (pixel_width - | |
| 4277 window_left_gutter_width (w, 0) - | |
| 4278 window_right_gutter_width (w, 0) - | |
| 4279 (include_margins_p ? 0 : window_left_margin_width (w)) - | |
| 4280 (include_margins_p ? 0 : window_right_margin_width (w))); | |
| 4281 | |
| 4282 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4283 | |
| 3676 | 4284 if (defwidth) |
| 4285 char_width = (avail_width / defwidth); | |
| 428 | 4286 |
| 4287 /* It's the calling function's responsibility to check these values | |
| 4288 and make sure they're not out of range. | |
| 4289 | |
| 4290 #### We need to go through the calling functions and actually | |
| 4291 do this. */ | |
| 4292 return max (0, char_width); | |
| 4293 } | |
| 4294 | |
| 4295 static int | |
| 4296 window_char_width_to_pixel_width (struct window *w, int char_width, | |
| 4297 int include_margins_p) | |
| 4298 { | |
| 4299 int avail_width; | |
| 4300 int pixel_width; | |
| 4301 int defheight, defwidth; | |
| 793 | 4302 Lisp_Object window = wrap_window (w); |
| 4303 | |
| 428 | 4304 |
| 4305 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4306 | |
| 4307 avail_width = char_width * defwidth; | |
| 4308 pixel_width = (avail_width + | |
| 442 | 4309 window_left_window_gutter_width (w, 0) + |
| 4310 window_right_window_gutter_width (w, 0) + | |
| 428 | 4311 (include_margins_p ? 0 : window_left_margin_width (w)) + |
| 4312 (include_margins_p ? 0 : window_right_margin_width (w))); | |
| 4313 | |
| 4314 /* It's the calling function's responsibility to check these values | |
| 4315 and make sure they're not out of range. | |
| 4316 | |
| 4317 #### We need to go through the calling functions and actually | |
| 4318 do this. */ | |
| 4319 return max (0, pixel_width); | |
| 4320 } | |
| 4321 | |
| 4322 /* This returns the usable space which doesn't include space needed by | |
| 4323 scrollbars or divider lines. */ | |
| 4324 int | |
| 4325 window_char_width (struct window *w, int include_margins_p) | |
| 4326 { | |
| 4327 return window_pixel_width_to_char_width (w, WINDOW_WIDTH (w), | |
| 4328 include_margins_p); | |
| 4329 } | |
| 4330 | |
| 4331 #define MINSIZE(w) \ | |
| 4332 (widthflag \ | |
| 4333 ? window_min_width * defwidth \ | |
| 4334 : (defheight * (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height))) | |
| 4335 | |
| 4336 #define CURBEG(w) \ | |
| 4337 *(widthflag ? (int *) &WINDOW_LEFT (w) : (int *) &WINDOW_TOP (w)) | |
| 4338 | |
| 4339 #define CURSIZE(w) \ | |
| 4340 *(widthflag ? (int *) &WINDOW_WIDTH (w) : (int *) &WINDOW_HEIGHT (w)) | |
| 4341 | |
| 4342 #define CURCHARSIZE(w) \ | |
| 4343 (widthflag ? window_char_width (w, 0) : window_char_height (w, 1)) | |
| 4344 | |
| 4345 #define MINCHARSIZE(window) \ | |
| 4346 (widthflag ? window_min_width : MINI_WINDOW_P (XWINDOW (window)) \ | |
| 4347 ? 1 : window_min_height) | |
| 4348 | |
| 442 | 4349 static int |
| 4350 window_pixheight (Lisp_Object w) | |
| 4351 { | |
| 4352 return window_pixel_height (XWINDOW (w)); | |
| 4353 } | |
| 4354 | |
| 428 | 4355 /* Unlike set_window_pixheight, this function |
| 4356 also changes the heights of the siblings so as to | |
| 4357 keep everything consistent. */ | |
| 4358 | |
| 4359 static void | |
| 444 | 4360 change_window_height (Lisp_Object window, int delta, Lisp_Object horizontalp, |
| 428 | 4361 int inpixels) |
| 4362 { | |
| 444 | 4363 struct window *win = decode_window (window); |
| 4364 int widthflag = !NILP (horizontalp); | |
| 428 | 4365 Lisp_Object parent; |
| 4366 struct window *w; | |
| 4367 struct frame *f; | |
| 4368 int *sizep; | |
| 4369 int (*sizefun) (Lisp_Object) = (widthflag | |
| 4370 ? window_pixel_width | |
| 442 | 4371 : window_pixheight); |
| 428 | 4372 void (*setsizefun) (Lisp_Object, int, int) = (widthflag |
| 4373 ? set_window_pixwidth | |
| 4374 : set_window_pixheight); | |
| 4375 int dim; | |
| 4376 int defheight, defwidth; | |
| 4377 | |
| 4378 if (delta == 0) | |
| 4379 return; | |
| 4380 | |
| 4381 check_min_window_sizes (); | |
| 4382 | |
| 793 | 4383 window = wrap_window (win); |
| 428 | 4384 f = XFRAME (win->frame); |
| 4385 if (EQ (window, FRAME_ROOT_WINDOW (f))) | |
| 563 | 4386 invalid_operation ("Won't change only window", Qunbound); |
| 428 | 4387 |
| 4388 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4389 | |
| 4390 while (1) | |
| 4391 { | |
| 4392 w = XWINDOW (window); | |
| 4393 parent = w->parent; | |
| 4394 if (NILP (parent)) | |
| 4395 { | |
| 4396 if (widthflag) | |
| 3078 | 4397 { |
| 4398 int new_pixsize; | |
| 4399 sizep = &CURSIZE (w); | |
| 3466 | 4400 dim = CURCHARSIZE (w); |
| 3078 | 4401 new_pixsize = inpixels?(*sizep + delta):(dim+delta); |
| 4402 set_window_pixsize (window, new_pixsize, 0, 0); | |
| 4403 return; | |
| 4404 } | |
| 428 | 4405 break; |
| 4406 } | |
| 4407 if (widthflag | |
| 4408 ? !NILP (XWINDOW (parent)->hchild) | |
| 4409 : !NILP (XWINDOW (parent)->vchild)) | |
| 4410 break; | |
| 4411 window = parent; | |
| 4412 } | |
| 4413 | |
| 4414 sizep = &CURSIZE (w); | |
| 4415 dim = CURCHARSIZE (w); | |
| 4416 | |
| 4417 if ((inpixels && (*sizep + delta) < MINSIZE (window)) || | |
| 4418 (!inpixels && (dim + delta) < MINCHARSIZE (window))) | |
| 4419 { | |
| 4420 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 4421 return; | |
| 4422 else if (!NILP (parent)) | |
| 4423 { | |
| 4424 Fdelete_window (window, Qnil); | |
| 4425 return; | |
| 4426 } | |
| 4427 } | |
| 4428 | |
| 4429 if (!inpixels) | |
| 4430 delta *= (widthflag ? defwidth : defheight); | |
| 4431 | |
| 4432 { | |
| 4433 int maxdelta; | |
| 4434 | |
| 4435 maxdelta = ((!NILP (parent)) | |
| 4436 ? (*sizefun) (parent) - *sizep | |
| 4437 : ((!NILP (w->next)) | |
| 4438 ? (*sizefun) (w->next) - MINSIZE (w->next) | |
| 4439 : ((!NILP (w->prev)) | |
| 4440 ? (*sizefun) (w->prev) - MINSIZE (w->prev) | |
| 4441 /* This is a frame with only one window, | |
| 4442 a minibuffer-only or a minibufferless frame. */ | |
| 4443 : (delta = 0)))); | |
| 4444 | |
| 4445 if (delta > maxdelta) | |
| 4446 /* This case traps trying to make the minibuffer | |
| 4447 the full frame, or make the only window aside from the | |
| 4448 minibuffer the full frame. */ | |
| 4449 delta = maxdelta; | |
| 4450 | |
| 4451 if (delta == 0) | |
| 4452 return; | |
| 4453 | |
| 4454 #if 0 /* FSFmacs */ | |
| 4455 /* #### Chuck: is this correct? */ | |
| 4456 if (*sizep + delta < MINSIZE (window)) | |
| 4457 { | |
| 4458 Fdelete_window (window); | |
| 4459 return; | |
| 4460 } | |
| 4461 #endif | |
| 4462 } | |
| 4463 | |
| 4464 if (!NILP (w->next) && | |
| 4465 (*sizefun) (w->next) - delta >= (int) MINSIZE (w->next)) | |
| 4466 { | |
| 4467 CURBEG (XWINDOW (w->next)) += delta; | |
| 4468 (*setsizefun) (w->next, (*sizefun) (w->next) - delta, 0); | |
| 4469 (*setsizefun) (window, *sizep + delta, 0); | |
| 4470 } | |
| 4471 else if (!NILP (w->prev) && | |
| 4472 (*sizefun) (w->prev) - delta >= (int) MINSIZE (w->prev)) | |
| 4473 { | |
| 4474 (*setsizefun) (w->prev, (*sizefun) (w->prev) - delta, 0); | |
| 4475 CURBEG (w) -= delta; | |
| 4476 (*setsizefun) (window, *sizep + delta, 0); | |
| 4477 } | |
| 4478 else | |
| 4479 { | |
| 4480 int delta1; | |
| 4481 int opht = (*sizefun) (parent); | |
| 4482 | |
| 4483 /* If trying to grow this window to or beyond size of the parent, | |
| 4484 make delta1 so big that, on shrinking back down, | |
| 4485 all the siblings end up with less than one line and are deleted. */ | |
| 4486 if (opht <= *sizep + delta) | |
| 4487 delta1 = opht * opht * 2; | |
| 4488 /* Otherwise, make delta1 just right so that if we add delta1 | |
| 4489 lines to this window and to the parent, and then shrink | |
| 4490 the parent back to its original size, the new proportional | |
| 4491 size of this window will increase by delta. */ | |
| 4492 else | |
| 4493 delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
| 4494 | |
| 4495 /* Add delta1 lines or columns to this window, and to the parent, | |
| 4496 keeping things consistent while not affecting siblings. */ | |
| 4497 CURSIZE (XWINDOW (parent)) = opht + delta1; | |
| 4498 (*setsizefun) (window, *sizep + delta1, 0); | |
| 4499 | |
| 4500 /* Squeeze out delta1 lines or columns from our parent, | |
| 4501 shrinking this window and siblings proportionately. | |
| 4502 This brings parent back to correct size. | |
| 4503 Delta1 was calculated so this makes this window the desired size, | |
| 4504 taking it all out of the siblings. */ | |
| 4505 (*setsizefun) (parent, opht, 0); | |
| 4506 } | |
| 4507 | |
| 4508 SET_LAST_MODIFIED (w, 0); | |
| 4509 SET_LAST_FACECHANGE (w); | |
| 4510 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 4511 /* overkill maybe, but better to be correct */ | |
| 4512 MARK_FRAME_GUTTERS_CHANGED (f); | |
| 4513 } | |
| 4514 #undef MINSIZE | |
| 4515 #undef CURBEG | |
| 4516 #undef CURSIZE | |
| 4517 #undef CURCHARSIZE | |
| 4518 #undef MINCHARSIZE | |
| 4519 | |
| 4520 | |
| 4521 | |
| 444 | 4522 /* Scroll contents of window WINDOW up COUNT lines. |
| 4523 If COUNT < (top line height / average line height) then we just adjust | |
| 4524 the top clip. */ | |
| 428 | 4525 void |
| 444 | 4526 window_scroll (Lisp_Object window, Lisp_Object count, int direction, |
| 578 | 4527 Error_Behavior errb) |
| 428 | 4528 { |
| 4529 struct window *w = XWINDOW (window); | |
| 4530 struct buffer *b = XBUFFER (w->buffer); | |
| 4531 int selected = EQ (window, Fselected_window (Qnil)); | |
| 4532 int value = 0; | |
| 4533 Lisp_Object point, tem; | |
| 4534 display_line_dynarr *dla; | |
| 4535 int fheight, fwidth, modeline = 0; | |
| 4536 struct display_line* dl; | |
| 4537 | |
| 4538 if (selected) | |
| 4539 point = make_int (BUF_PT (b)); | |
| 4540 else | |
| 4541 { | |
| 665 | 4542 Charbpos pos = marker_position (w->pointm[CURRENT_DISP]); |
| 428 | 4543 |
| 4544 if (pos < BUF_BEGV (b)) | |
| 4545 pos = BUF_BEGV (b); | |
| 4546 else if (pos > BUF_ZV (b)) | |
| 4547 pos = BUF_ZV (b); | |
| 4548 | |
| 4549 point = make_int (pos); | |
| 4550 } | |
| 4551 | |
| 4552 /* Always set force_start so that redisplay_window will run | |
| 4553 the window-scroll-functions. */ | |
| 4554 w->force_start = 1; | |
| 4555 | |
| 4556 /* #### When the fuck does this happen? I'm so glad that history has | |
| 4557 completely documented the behavior of the scrolling functions under | |
| 4558 all circumstances. */ | |
| 1708 | 4559 tem = Fpos_visible_in_window_p (point, window, Qnil); |
| 428 | 4560 if (NILP (tem)) |
| 4561 { | |
| 4562 Fvertical_motion (make_int (-window_char_height (w, 0) / 2), | |
| 4563 window, Qnil); | |
| 4564 Fset_marker (w->start[CURRENT_DISP], point, w->buffer); | |
| 4565 w->start_at_line_beg = beginning_of_line_p (b, XINT (point)); | |
| 4566 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4567 MARK_WINDOWS_CHANGED (w); | |
| 4568 } | |
| 4569 | |
| 444 | 4570 if (!NILP (count)) |
| 428 | 4571 { |
| 444 | 4572 if (EQ (count, Qminus)) |
| 428 | 4573 direction *= -1; |
| 4574 else | |
| 4575 { | |
| 444 | 4576 count = Fprefix_numeric_value (count); |
| 4577 value = XINT (count) * direction; | |
| 428 | 4578 |
| 4579 if (!value) | |
| 4580 return; /* someone just made a pointless call */ | |
| 4581 } | |
| 4582 } | |
| 4583 | |
| 4584 /* If the user didn't specify how far to scroll then we have to figure it | |
| 4585 out by ourselves. */ | |
| 444 | 4586 if (NILP (count) || EQ (count, Qminus)) |
| 428 | 4587 { |
| 4588 /* Going forwards is easy. If that is what we are doing then just | |
| 4589 set value and the section which handles the user specifying a | |
| 4590 positive value will work. */ | |
| 4591 if (direction == 1) | |
| 4592 { | |
| 4593 value = window_displayed_height (w) - next_screen_context_lines; | |
| 4594 value = (value < 1 ? 1 : value); | |
| 4595 } | |
| 4596 | |
| 4597 /* Going backwards is hard. We can't use the same loop used if the | |
| 4598 user specified a negative value because we care about | |
| 4599 next_screen_context_lines. In a variable height world you don't | |
| 4600 know how many lines above you can actually be displayed and still | |
| 4601 have the context lines appear. So we leave value set to 0 and add | |
| 4602 a separate section to deal with this. */ | |
| 4603 | |
| 4604 } | |
| 4605 | |
| 4606 if (direction == 1 && !value) | |
| 4607 { | |
| 4608 return; | |
| 4609 } | |
| 4610 | |
| 4611 /* Determine parameters to test for partial line scrolling with. */ | |
| 4612 dla = window_display_lines (w, CURRENT_DISP); | |
| 4613 | |
| 4614 if (INTP (Vwindow_pixel_scroll_increment)) | |
| 4615 fheight = XINT (Vwindow_pixel_scroll_increment); | |
| 440 | 4616 else if (!NILP (Vwindow_pixel_scroll_increment)) |
| 428 | 4617 default_face_height_and_width (window, &fheight, &fwidth); |
| 438 | 4618 |
| 428 | 4619 if (Dynarr_length (dla) >= 1) |
| 4967 | 4620 modeline = Dynarr_begin (dla)->modeline; |
| 428 | 4621 |
| 4622 dl = Dynarr_atp (dla, modeline); | |
| 438 | 4623 |
| 428 | 4624 if (value > 0) |
| 4625 { | |
| 4626 /* Go for partial display line scrolling. This just means bumping | |
| 4627 the clip by a reasonable amount and redisplaying, everything else | |
| 4628 remains unchanged. */ | |
| 4629 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4630 && | |
| 4631 Dynarr_length (dla) >= (1 + modeline) | |
| 4632 && | |
| 458 | 4633 (dl->ascent - dl->top_clip) > fheight * value) |
| 428 | 4634 { |
| 4635 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
| 4636 MARK_WINDOWS_CHANGED (w); | |
| 4637 } | |
| 4638 else | |
| 4639 { | |
| 4640 int vtarget; | |
| 665 | 4641 Charbpos startp, old_start; |
| 438 | 4642 |
| 428 | 4643 if (WINDOW_TEXT_TOP_CLIP (w)) |
| 4644 { | |
| 4645 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4646 MARK_WINDOWS_CHANGED (w); | |
| 4647 } | |
| 4648 | |
| 4649 old_start = marker_position (w->start[CURRENT_DISP]); | |
| 4650 startp = vmotion (w, old_start, value, &vtarget); | |
| 438 | 4651 |
| 428 | 4652 if (vtarget < value && |
| 4653 (w->window_end_pos[CURRENT_DISP] == -1 | |
| 4654 || (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b)))) | |
| 4655 { | |
| 563 | 4656 maybe_signal_error_1 (Qend_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4657 return; |
| 4658 } | |
| 4659 else | |
| 4660 { | |
| 4661 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4662 w->buffer); | |
| 4663 w->force_start = 1; | |
| 4664 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4665 MARK_WINDOWS_CHANGED (w); | |
| 438 | 4666 |
| 1708 | 4667 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 844 | 4668 Fset_window_point (wrap_window (w), make_int (startp)); |
| 428 | 4669 } |
| 4670 } | |
| 4671 } | |
| 4672 else if (value < 0) | |
| 4673 { | |
| 4674 /* Go for partial display line scrolling. This just means bumping | |
| 4675 the clip by a reasonable amount and redisplaying, everything else | |
| 4676 remains unchanged. */ | |
| 4677 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4678 && | |
| 4679 Dynarr_length (dla) >= (1 + modeline) | |
| 4680 && | |
| 4681 (dl->ascent - dl->top_clip) - fheight * value < | |
| 4682 (dl->ascent + dl->descent - dl->clip) | |
| 4683 && | |
| 4684 WINDOW_TEXT_TOP_CLIP (w) + value * fheight > 0) | |
| 4685 { | |
| 4686 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
| 4687 MARK_WINDOWS_CHANGED (w); | |
| 4688 } | |
| 4689 else | |
| 4690 { | |
| 4691 int vtarget; | |
| 665 | 4692 Charbpos startp, old_start; |
| 438 | 4693 |
| 428 | 4694 if (WINDOW_TEXT_TOP_CLIP (w)) |
| 4695 { | |
| 4696 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4697 MARK_WINDOWS_CHANGED (w); | |
| 4698 } | |
| 438 | 4699 |
| 428 | 4700 old_start = marker_position (w->start[CURRENT_DISP]); |
| 4701 startp = vmotion (w, old_start, value, &vtarget); | |
| 438 | 4702 |
| 428 | 4703 if (vtarget > value |
| 4704 && marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
| 4705 { | |
| 563 | 4706 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4707 return; |
| 4708 } | |
| 4709 else | |
| 4710 { | |
| 4711 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4712 w->buffer); | |
| 4713 w->force_start = 1; | |
| 4714 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4715 MARK_WINDOWS_CHANGED (w); | |
| 438 | 4716 |
| 440 | 4717 /* #### Scroll back by less than a line. This code was |
| 4718 originally for scrolling over large pixmaps and it | |
| 4719 loses when a line being *exposed* at the top of the | |
| 4720 window is bigger than the current one. However, for | |
| 4721 pixel based scrolling in general we can guess that | |
| 4722 the line we are going to display is probably the same | |
| 4723 size as the one we are on. In that instance we can | |
| 4724 have a reasonable stab at a suitable top clip. Fixing | |
| 4725 this properly is hard (and probably slow) as we would | |
| 4726 have to call redisplay to figure out the exposed line | |
| 4727 size. */ | |
| 4728 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4729 && Dynarr_length (dla) >= (1 + modeline) | |
| 4730 && dl->ascent + fheight * value > 0) | |
| 4731 { | |
| 4732 WINDOW_TEXT_TOP_CLIP (w) = (dl->ascent + fheight * value); | |
| 4733 } | |
| 4734 | |
| 1708 | 4735 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 428 | 4736 { |
| 665 | 4737 Charbpos new_point; |
| 438 | 4738 |
| 428 | 4739 if (MINI_WINDOW_P (w)) |
| 4740 new_point = startp; | |
| 4741 else | |
| 4742 new_point = start_of_last_line (w, startp); | |
| 438 | 4743 |
| 844 | 4744 Fset_window_point (wrap_window (w), make_int (new_point)); |
| 428 | 4745 } |
| 4746 } | |
| 4747 } | |
| 4748 } | |
| 4749 else /* value == 0 && direction == -1 */ | |
| 4750 { | |
| 4751 if (WINDOW_TEXT_TOP_CLIP (w)) | |
| 4752 { | |
| 4753 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4754 MARK_WINDOWS_CHANGED (w); | |
| 4755 } | |
| 4756 if (marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
| 4757 { | |
| 563 | 4758 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4759 return; |
| 4760 } | |
| 4761 else | |
| 4762 { | |
| 4763 int vtarget; | |
| 4764 int movement = next_screen_context_lines - 1; | |
| 665 | 4765 Charbpos old_startp = marker_position (w->start[CURRENT_DISP]); |
| 4766 Charbpos bottom = vmotion (w, old_startp, movement, &vtarget); | |
| 4767 Charbpos startp = | |
| 428 | 4768 start_with_point_on_display_line (w, bottom, |
| 4769 -1 - (movement - vtarget)); | |
| 4770 | |
| 4771 if (startp >= old_startp) | |
| 4772 startp = vmotion (w, old_startp, -1, NULL); | |
| 4773 | |
| 4774 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4775 w->buffer); | |
| 4776 w->force_start = 1; | |
| 4777 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4778 MARK_WINDOWS_CHANGED (w); | |
| 4779 | |
| 1708 | 4780 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 428 | 4781 { |
| 665 | 4782 Charbpos new_point = start_of_last_line (w, startp); |
| 428 | 4783 |
| 844 | 4784 Fset_window_point (wrap_window (w), make_int (new_point)); |
| 428 | 4785 } |
| 4786 } | |
| 4787 } | |
| 4788 } | |
| 4789 | |
| 4790 DEFUN ("scroll-up", Fscroll_up, 0, 1, "_P", /* | |
| 444 | 4791 Scroll text of current window up COUNT lines; or near full screen if no arg. |
| 428 | 4792 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 4793 Negative COUNT means scroll downward. |
| 428 | 4794 When calling from a program, supply an integer as argument or nil. |
| 4795 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 4796 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 4797 signaled. | |
| 462 | 4798 |
| 4799 The characters that are moved over may be added to the current selection | |
| 4800 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4801 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4802 the documentation for this variable for more details. | |
| 428 | 4803 */ |
| 444 | 4804 (count)) |
| 4805 { | |
| 4806 window_scroll (Fselected_window (Qnil), count, 1, ERROR_ME); | |
| 428 | 4807 return Qnil; |
| 4808 } | |
| 4809 | |
| 4810 DEFUN ("scroll-down", Fscroll_down, 0, 1, "_P", /* | |
| 444 | 4811 Scroll text of current window down COUNT lines; or near full screen if no arg. |
| 428 | 4812 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 4813 Negative COUNT means scroll upward. |
| 428 | 4814 When calling from a program, supply a number as argument or nil. |
| 4815 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 4816 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 4817 signaled. | |
| 462 | 4818 |
| 4819 The characters that are moved over may be added to the current selection | |
| 4820 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4821 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4822 the documentation for this variable for more details. | |
| 428 | 4823 */ |
| 444 | 4824 (count)) |
| 4825 { | |
| 4826 window_scroll (Fselected_window (Qnil), count, -1, ERROR_ME); | |
| 428 | 4827 return Qnil; |
| 4828 } | |
| 4829 | |
| 4830 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, 0, 0, 0, /* | |
| 4831 Return the other window for "other window scroll" commands. | |
| 4832 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
| 4833 specifies the window. | |
| 4834 If `other-window-scroll-buffer' is non-nil, a window | |
| 4835 showing that buffer is used. | |
| 4836 */ | |
| 4837 ()) | |
| 4838 { | |
| 4839 Lisp_Object window; | |
| 4840 Lisp_Object selected_window = Fselected_window (Qnil); | |
| 4841 | |
| 4842 if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
| 4843 && !NILP (Vminibuffer_scroll_window)) | |
| 4844 window = Vminibuffer_scroll_window; | |
| 4845 /* If buffer is specified, scroll that buffer. */ | |
| 4846 else if (!NILP (Vother_window_scroll_buffer)) | |
| 4847 { | |
| 4848 window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil, Qnil); | |
| 4849 if (NILP (window)) | |
| 4850 window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); | |
| 4851 } | |
| 4852 else | |
| 4853 { | |
| 4854 /* Nothing specified; look for a neighboring window on the same | |
| 4855 frame. */ | |
| 4856 window = Fnext_window (selected_window, Qnil, Qnil, Qnil); | |
| 4857 | |
| 4858 if (EQ (window, selected_window)) | |
| 4859 /* That didn't get us anywhere; look for a window on another | |
| 4860 visible frame. */ | |
| 4861 do | |
| 4862 window = Fnext_window (window, Qnil, Qt, Qnil); | |
| 4863 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
| 4864 && ! EQ (window, selected_window)); | |
| 4865 } | |
| 4866 | |
| 4867 CHECK_LIVE_WINDOW (window); | |
| 4868 | |
| 4869 if (EQ (window, selected_window)) | |
| 563 | 4870 invalid_operation ("There is no other window", Qunbound); |
| 428 | 4871 |
| 4872 return window; | |
| 4873 } | |
| 4874 | |
| 4875 DEFUN ("scroll-other-window", Fscroll_other_window, 0, 1, "_P", /* | |
| 444 | 4876 Scroll next window upward COUNT lines; or near full frame if no arg. |
| 428 | 4877 The next window is the one below the current one; or the one at the top |
| 444 | 4878 if the current one is at the bottom. Negative COUNT means scroll downward. |
| 428 | 4879 When calling from a program, supply a number as argument or nil. |
| 4880 | |
| 4881 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
| 4882 specifies the window to scroll. | |
| 4883 If `other-window-scroll-buffer' is non-nil, scroll the window | |
| 4884 showing that buffer, popping the buffer up if necessary. | |
| 4885 */ | |
| 444 | 4886 (count)) |
| 4887 { | |
| 4888 window_scroll (Fother_window_for_scrolling (), count, 1, ERROR_ME); | |
| 428 | 4889 return Qnil; |
| 4890 } | |
| 4891 | |
| 4892 DEFUN ("scroll-left", Fscroll_left, 0, 1, "_P", /* | |
| 444 | 4893 Scroll selected window display COUNT columns left. |
| 4894 Default for COUNT is window width minus 2. | |
| 462 | 4895 |
| 4896 The characters that are moved over may be added to the current selection | |
| 4897 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4898 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4899 the documentation for this variable for more details. | |
| 428 | 4900 */ |
| 444 | 4901 (count)) |
| 428 | 4902 { |
| 4903 Lisp_Object window = Fselected_window (Qnil); | |
| 4904 struct window *w = XWINDOW (window); | |
| 444 | 4905 int n = (NILP (count) ? |
| 4906 window_char_width (w, 0) - 2 : | |
| 4907 XINT (Fprefix_numeric_value (count))); | |
| 4908 | |
| 4909 return Fset_window_hscroll (window, make_int (w->hscroll + n)); | |
| 428 | 4910 } |
| 4911 | |
| 4912 DEFUN ("scroll-right", Fscroll_right, 0, 1, "_P", /* | |
| 444 | 4913 Scroll selected window display COUNT columns right. |
| 4914 Default for COUNT is window width minus 2. | |
| 462 | 4915 |
| 4916 The characters that are moved over may be added to the current selection | |
| 4917 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4918 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4919 the documentation for this variable for more details. | |
| 428 | 4920 */ |
| 444 | 4921 (count)) |
| 428 | 4922 { |
| 4923 Lisp_Object window = Fselected_window (Qnil); | |
| 4924 struct window *w = XWINDOW (window); | |
| 444 | 4925 int n = (NILP (count) ? |
| 4926 window_char_width (w, 0) - 2 : | |
| 4927 XINT (Fprefix_numeric_value (count))); | |
| 4928 | |
| 4929 return Fset_window_hscroll (window, make_int (w->hscroll - n)); | |
| 428 | 4930 } |
| 4931 | |
| 4932 DEFUN ("center-to-window-line", Fcenter_to_window_line, 0, 2, "_P", /* | |
| 4933 Center point in WINDOW. With N, put point on line N. | |
| 4934 The desired position of point is always relative to the window. | |
| 4935 If WINDOW is nil, the selected window is used. | |
| 4936 */ | |
| 4937 (n, window)) | |
| 4938 { | |
| 4939 struct window *w = decode_window (window); | |
| 4940 struct buffer *b = XBUFFER (w->buffer); | |
| 665 | 4941 Charbpos opoint = BUF_PT (b); |
| 4942 Charbpos startp; | |
| 428 | 4943 |
| 4944 if (NILP (n)) | |
| 4945 startp = start_with_line_at_pixpos (w, opoint, window_half_pixpos (w)); | |
| 4946 else | |
| 4947 { | |
| 4948 n = Fprefix_numeric_value (n); | |
| 4949 CHECK_INT (n); | |
| 4950 startp = start_with_point_on_display_line (w, opoint, XINT (n)); | |
| 4951 } | |
| 4952 | |
| 4953 Fset_marker (w->start[CURRENT_DISP], make_int (startp), w->buffer); | |
| 4954 | |
| 4955 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4956 w->force_start = 1; | |
| 4957 MARK_WINDOWS_CHANGED (w); | |
| 4958 return Qnil; | |
| 4959 } | |
| 4960 | |
| 4961 DEFUN ("move-to-window-line", Fmove_to_window_line, 1, 2, "_P", /* | |
| 4962 Position point relative to WINDOW. | |
| 4963 With no argument, position text at center of window. | |
| 4964 An argument specifies window line; zero means top of window, | |
| 4965 negative means relative to bottom of window. | |
| 4966 If WINDOW is nil, the selected window is used. | |
| 4967 */ | |
| 4968 (arg, window)) | |
| 4969 { | |
| 4970 struct window *w; | |
| 4971 struct buffer *b; | |
| 4972 int height; | |
| 665 | 4973 Charbpos start, new_point; |
| 428 | 4974 int selected; |
| 4975 | |
| 4976 /* Don't use decode_window() because we need the new value of | |
| 4977 WINDOW. */ | |
| 4978 if (NILP (window)) | |
| 4979 window = Fselected_window (Qnil); | |
| 4980 else | |
| 4981 CHECK_LIVE_WINDOW (window); | |
| 4982 w = XWINDOW (window); | |
| 4983 b = XBUFFER (w->buffer); | |
| 4984 | |
| 4985 height = window_displayed_height (w); | |
| 4986 selected = EQ (window, Fselected_window (w->frame)); | |
| 4987 | |
| 4988 if (NILP (arg)) | |
| 4989 { | |
| 4990 int retval; | |
| 4991 | |
| 4992 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
| 4993 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b)) | |
| 4994 { | |
| 4995 new_point = point_at_center (w, CURRENT_DISP, 0, 0); | |
| 4996 | |
| 844 | 4997 /* #### Here we are checking the selected window of the frame |
| 4998 instead of the selected window period. Elsewhere we check | |
| 4999 the selected window of the device. What a mess! */ | |
| 428 | 5000 if (selected) |
| 5001 BUF_SET_PT (b, new_point); | |
| 5002 else | |
| 5003 Fset_window_point (window, make_int (new_point)); | |
| 5004 | |
| 5005 retval = line_at_center (w, CURRENT_DISP, 0, 0); | |
| 5006 } | |
| 5007 else | |
| 5008 { | |
| 5009 start = marker_position (w->start[CURRENT_DISP]); | |
| 5010 if (start < BUF_BEGV (b)) | |
| 5011 start = BUF_BEGV (b); | |
| 5012 else if (start > BUF_ZV (b)) | |
| 5013 start = BUF_ZV (b); | |
| 5014 | |
| 5015 if (selected) | |
| 5016 new_point = BUF_PT (b); | |
| 5017 else | |
| 5018 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
| 5019 | |
| 5020 new_point = point_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
| 5021 | |
| 5022 if (selected) | |
| 5023 BUF_SET_PT (b, new_point); | |
| 5024 else | |
| 5025 Fset_window_point (window, make_int (new_point)); | |
| 5026 | |
| 5027 retval = line_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
| 5028 } | |
| 5029 | |
| 5030 return make_int (retval); | |
| 5031 } | |
| 5032 else | |
| 5033 { | |
| 5034 /* #### Is this going to work right when at eob? */ | |
| 5035 arg = Fprefix_numeric_value (arg); | |
| 5036 if (XINT (arg) < 0) | |
| 793 | 5037 arg = make_int (XINT (arg) + height); |
| 428 | 5038 } |
| 5039 | |
| 5040 start = marker_position (w->start[CURRENT_DISP]); | |
| 5041 if (start < BUF_BEGV (b) || start > BUF_ZV (b)) | |
| 5042 { | |
| 5043 if (selected) | |
| 5044 new_point = BUF_PT (b); | |
| 5045 else | |
| 5046 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
| 5047 | |
| 5048 new_point = vmotion (XWINDOW (window), new_point, -height / 2, 0); | |
| 5049 | |
| 5050 if (selected) | |
| 5051 BUF_SET_PT (b, new_point); | |
| 5052 else | |
| 5053 Fset_window_point (window, make_int (new_point)); | |
| 5054 | |
| 5055 Fset_marker (w->start[CURRENT_DISP], make_int (new_point), | |
| 5056 w->buffer); | |
| 5057 w->start_at_line_beg = beginning_of_line_p (b, new_point); | |
| 5058 w->force_start = 1; | |
| 5059 } | |
| 5060 else | |
| 5061 { | |
| 5062 if (selected) | |
| 5063 BUF_SET_PT (b, start); | |
| 5064 else | |
| 5065 Fset_window_point (window, make_int (start)); | |
| 5066 } | |
| 5067 | |
| 5068 if (selected) | |
| 5069 return Fvertical_motion (arg, window, Qnil); | |
| 5070 else | |
| 5071 { | |
| 5072 int vpos; | |
| 5073 new_point = vmotion (XWINDOW (window), | |
| 5074 marker_position (w->pointm[CURRENT_DISP]), | |
| 5075 XINT (arg), &vpos); | |
| 5076 Fset_window_point (window, make_int (new_point)); | |
| 5077 return make_int (vpos); | |
| 5078 } | |
| 5079 } | |
| 5080 | |
| 5081 | |
| 5082 static int | |
| 5083 map_windows_1 (Lisp_Object window, | |
| 5084 int (*mapfun) (struct window *w, void *closure), | |
| 5085 void *closure) | |
| 5086 { | |
| 5087 for (; !NILP (window); window = XWINDOW (window)->next) | |
| 5088 { | |
| 5089 int retval; | |
| 5090 struct window *w = XWINDOW (window); | |
| 5091 | |
| 5092 if (!NILP (w->vchild)) | |
| 5093 retval = map_windows_1 (w->vchild, mapfun, closure); | |
| 5094 else if (!NILP (w->hchild)) | |
| 5095 retval = map_windows_1 (w->hchild, mapfun, closure); | |
| 5096 else | |
| 5097 retval = (mapfun) (w, closure); | |
| 5098 | |
| 5099 if (retval) | |
| 5100 return retval; | |
| 5101 } | |
| 5102 | |
| 5103 return 0; | |
| 5104 } | |
| 5105 | |
| 5106 /* Map MAPFUN over the windows in F. CLOSURE is passed to each | |
| 5107 invocation of MAPFUN. If any invocation of MAPFUN returns | |
| 5108 non-zero, the mapping is halted. Otherwise, map_windows() maps | |
| 5109 over all windows in F. | |
| 5110 | |
| 800 | 5111 If F is null, map over all frames on all devices and consoles. |
| 5112 | |
| 428 | 5113 If MAPFUN creates or deletes windows, the behavior is undefined. */ |
| 5114 | |
| 5115 int | |
| 5116 map_windows (struct frame *f, int (*mapfun) (struct window *w, void *closure), | |
| 5117 void *closure) | |
| 5118 { | |
| 5119 if (f) | |
| 5120 return map_windows_1 (FRAME_ROOT_WINDOW (f), mapfun, closure); | |
| 5121 else | |
| 5122 { | |
| 5123 Lisp_Object frmcons, devcons, concons; | |
| 5124 | |
| 5125 FRAME_LOOP_NO_BREAK(frmcons, devcons, concons) | |
| 5126 { | |
| 5127 int v = map_windows_1 (FRAME_ROOT_WINDOW (XFRAME (XCAR (frmcons))), | |
| 5128 mapfun, closure); | |
| 5129 if (v) | |
| 5130 return v; | |
| 5131 } | |
| 5132 } | |
| 5133 | |
| 5134 return 0; | |
| 5135 } | |
| 5136 | |
| 5137 | |
| 5138 static void | |
| 2286 | 5139 modeline_shadow_thickness_changed (Lisp_Object UNUSED (specifier), |
| 5140 struct window *w, | |
| 5141 Lisp_Object UNUSED (oldval)) | |
| 428 | 5142 { |
| 5143 w->shadow_thickness_changed = 1; | |
| 5144 MARK_WINDOWS_CHANGED (w); | |
| 5145 } | |
| 5146 | |
| 5147 static void | |
| 2286 | 5148 vertical_divider_changed_in_window (Lisp_Object UNUSED (specifier), |
| 428 | 5149 struct window *w, |
| 2286 | 5150 Lisp_Object UNUSED (oldval)) |
| 428 | 5151 { |
| 5152 MARK_WINDOWS_CHANGED (w); | |
| 5153 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
| 5154 } | |
| 5155 | |
| 5156 /* also used in scrollbar.c */ | |
| 5157 void | |
| 2286 | 5158 some_window_value_changed (Lisp_Object UNUSED (specifier), |
| 5159 struct window *w, | |
| 5160 Lisp_Object UNUSED (oldval)) | |
| 428 | 5161 { |
| 5162 MARK_WINDOWS_CHANGED (w); | |
| 5163 } | |
| 5164 | |
| 5165 #ifdef MEMORY_USAGE_STATS | |
| 5166 | |
| 5167 struct window_stats | |
| 5168 { | |
| 5169 int face; | |
| 5170 int glyph; | |
| 5171 #ifdef HAVE_SCROLLBARS | |
| 5172 int scrollbar; | |
| 5173 #endif | |
| 5174 int line_start; | |
| 5175 int other_redisplay; | |
| 5176 int other; | |
| 5177 }; | |
| 5178 | |
| 5179 static void | |
| 5180 compute_window_mirror_usage (struct window_mirror *mir, | |
| 5181 struct window_stats *stats, | |
| 5182 struct overhead_stats *ovstats) | |
| 5183 { | |
| 5184 if (!mir) | |
| 5185 return; | |
| 3024 | 5186 stats->other += LISPOBJ_STORAGE_SIZE (mir, sizeof (*mir), ovstats); |
| 428 | 5187 #ifdef HAVE_SCROLLBARS |
| 5188 { | |
| 5189 struct device *d = XDEVICE (FRAME_DEVICE (mir->frame)); | |
| 5190 | |
| 5191 stats->scrollbar += | |
| 5192 compute_scrollbar_instance_usage (d, mir->scrollbar_vertical_instance, | |
| 5193 ovstats); | |
| 5194 stats->scrollbar += | |
| 5195 compute_scrollbar_instance_usage (d, mir->scrollbar_horizontal_instance, | |
| 5196 ovstats); | |
| 5197 } | |
| 5198 #endif /* HAVE_SCROLLBARS */ | |
| 5199 stats->other_redisplay += | |
| 5200 compute_display_line_dynarr_usage (mir->current_display_lines, ovstats); | |
| 5201 stats->other_redisplay += | |
| 5202 compute_display_line_dynarr_usage (mir->desired_display_lines, ovstats); | |
| 5203 } | |
| 5204 | |
| 5205 static void | |
| 5206 compute_window_usage (struct window *w, struct window_stats *stats, | |
| 5207 struct overhead_stats *ovstats) | |
| 5208 { | |
| 5209 xzero (*stats); | |
| 3024 | 5210 stats->other += LISPOBJ_STORAGE_SIZE (w, sizeof (*w), ovstats); |
| 428 | 5211 stats->face += compute_face_cachel_usage (w->face_cachels, ovstats); |
| 5212 stats->glyph += compute_glyph_cachel_usage (w->glyph_cachels, ovstats); | |
| 5213 stats->line_start += | |
| 5214 compute_line_start_cache_dynarr_usage (w->line_start_cache, ovstats); | |
| 5215 compute_window_mirror_usage (find_window_mirror (w), stats, ovstats); | |
| 5216 } | |
| 5217 | |
| 5218 DEFUN ("window-memory-usage", Fwindow_memory_usage, 1, 1, 0, /* | |
| 5219 Return stats about the memory usage of window WINDOW. | |
| 5220 The values returned are in the form of an alist of usage types and byte | |
| 5221 counts. The byte counts attempt to encompass all the memory used | |
| 5222 by the window (separate from the memory logically associated with a | |
| 5223 buffer or frame), including internal structures and any malloc() | |
| 5224 overhead associated with them. In practice, the byte counts are | |
| 5225 underestimated because certain memory usage is very hard to determine | |
| 5226 \(e.g. the amount of memory used inside the Xt library or inside the | |
| 5227 X server) and because there is other stuff that might logically | |
| 5228 be associated with a window, buffer, or frame (e.g. window configurations, | |
| 5229 glyphs) but should not obviously be included in the usage counts. | |
| 5230 | |
| 5231 Multiple slices of the total memory usage may be returned, separated | |
| 5232 by a nil. Each slice represents a particular view of the memory, a | |
| 5233 particular way of partitioning it into groups. Within a slice, there | |
| 5234 is no overlap between the groups of memory, and each slice collectively | |
| 5235 represents all the memory concerned. | |
| 5236 */ | |
| 5237 (window)) | |
| 5238 { | |
| 5239 struct window_stats stats; | |
| 5240 struct overhead_stats ovstats; | |
| 5241 Lisp_Object val = Qnil; | |
| 5242 | |
| 5243 CHECK_WINDOW (window); /* dead windows should be allowed, no? */ | |
| 5244 xzero (ovstats); | |
| 5245 compute_window_usage (XWINDOW (window), &stats, &ovstats); | |
| 5246 | |
| 5247 val = acons (Qface_cache, make_int (stats.face), val); | |
| 5248 val = acons (Qglyph_cache, make_int (stats.glyph), val); | |
| 5249 #ifdef HAVE_SCROLLBARS | |
| 5250 val = acons (Qscrollbar_instances, make_int (stats.scrollbar), val); | |
| 5251 #endif | |
| 5252 val = acons (Qline_start_cache, make_int (stats.line_start), val); | |
| 5253 val = acons (Qother_redisplay, make_int (stats.other_redisplay), val); | |
| 5254 val = acons (Qother, make_int (stats.other), val); | |
| 5255 val = Fcons (Qnil, val); | |
| 5256 val = acons (Qactually_requested, make_int (ovstats.was_requested), val); | |
| 5257 val = acons (Qmalloc_overhead, make_int (ovstats.malloc_overhead), val); | |
| 5258 val = acons (Qdynarr_overhead, make_int (ovstats.dynarr_overhead), val); | |
| 5259 | |
| 5260 return Fnreverse (val); | |
| 5261 } | |
| 5262 | |
| 5263 #endif /* MEMORY_USAGE_STATS */ | |
| 5264 | |
| 5265 /* Mark all subwindows of a window as deleted. The argument | |
| 5266 W is actually the subwindow tree of the window in question. */ | |
| 5267 | |
| 5268 void | |
| 5269 delete_all_subwindows (struct window *w) | |
| 5270 { | |
| 5271 if (!NILP (w->next)) delete_all_subwindows (XWINDOW (w->next)); | |
| 5272 if (!NILP (w->vchild)) delete_all_subwindows (XWINDOW (w->vchild)); | |
| 5273 if (!NILP (w->hchild)) delete_all_subwindows (XWINDOW (w->hchild)); | |
| 5274 | |
| 5275 mark_window_as_deleted (w); | |
| 5276 } | |
| 5277 | |
| 1149 | 5278 |
| 2289 | 5279 static int |
| 5280 get_current_pixel_pos (Lisp_Object window, Lisp_Object pos, | |
| 5281 struct window **w, | |
| 5282 struct rune **rb, struct display_line **dl) | |
| 428 | 5283 { |
| 2289 | 5284 display_line_dynarr *dla; |
| 5285 struct display_block *db = NULL; | |
| 5286 int x, y; | |
| 5287 | |
| 5288 *rb = NULL; | |
| 5289 *dl = NULL; | |
| 5290 *w = decode_window (window); | |
| 5291 dla = window_display_lines (*w, CURRENT_DISP); | |
| 5292 x = (*w)->last_point_x[CURRENT_DISP]; | |
| 5293 y = (*w)->last_point_y[CURRENT_DISP]; | |
| 5294 if (MINI_WINDOW_P (*w)) | |
| 5295 return 0; | |
| 428 | 5296 |
| 5297 if (y<0 || x<0 || y >= Dynarr_length (dla) || !NILP (pos)) | |
| 5298 { | |
| 5299 int first_line, i; | |
| 665 | 5300 Charbpos point; |
| 428 | 5301 |
| 5302 if (NILP (pos)) | |
| 5303 pos = Fwindow_point (window); | |
| 438 | 5304 |
| 428 | 5305 CHECK_INT (pos); |
| 5306 point = XINT (pos); | |
| 5307 | |
| 4967 | 5308 if (Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 428 | 5309 first_line = 1; |
| 5310 else | |
| 5311 first_line = 0; | |
| 5312 | |
| 5313 for (i = first_line; i < Dynarr_length (dla); i++) | |
| 5314 { | |
| 2289 | 5315 *dl = Dynarr_atp (dla, i); |
| 428 | 5316 /* find the vertical location first */ |
| 2289 | 5317 if (point >= (*dl)->charpos && point <= (*dl)->end_charpos) |
| 428 | 5318 { |
| 2289 | 5319 db = get_display_block_from_line (*dl, TEXT); |
| 428 | 5320 for (i = 0; i < Dynarr_length (db->runes); i++) |
| 5321 { | |
| 2289 | 5322 *rb = Dynarr_atp (db->runes, i); |
| 2290 | 5323 if (point <= (*rb)->charpos) |
| 826 | 5324 goto found_charpos; |
| 428 | 5325 } |
| 2289 | 5326 return 0; |
| 428 | 5327 } |
| 5328 } | |
| 2289 | 5329 return 0; |
| 826 | 5330 found_charpos: |
| 428 | 5331 ; |
| 5332 } | |
| 5333 else | |
| 5334 { | |
| 442 | 5335 /* optimized case */ |
| 2289 | 5336 *dl = Dynarr_atp (dla, y); |
| 5337 db = get_display_block_from_line (*dl, TEXT); | |
| 428 | 5338 |
| 5339 if (x >= Dynarr_length (db->runes)) | |
| 2289 | 5340 return 0; |
| 5341 | |
| 5342 *rb = Dynarr_atp (db->runes, x); | |
| 428 | 5343 } |
| 5344 | |
| 2289 | 5345 return 1; |
| 5346 } | |
| 5347 | |
| 5348 DEFUN ("current-pixel-column", Fcurrent_pixel_column, 0, 2, 0, /* | |
| 5349 Return the horizontal pixel position of point POS in window. | |
| 5350 Beginning of line is column 0. If WINDOW is nil, the current window | |
| 5351 is assumed. If POS is nil, point is assumed. Note that POS must be | |
| 5352 visible for a non-nil result to be returned. This is calculated using | |
| 5353 the redisplay display tables; because of this, the returned value will | |
| 5354 only be correct if the redisplay tables are up-to-date. Use | |
| 5355 \"(sit-for 0)\" to insure that they are; however, if WINDOW is part of | |
| 5356 a new frame, use the following instead: | |
| 5357 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
| 5358 */ | |
| 5359 (window, pos)) | |
| 5360 { | |
| 5361 struct window* w; | |
| 5362 struct display_line *dl; | |
| 5363 struct rune* rb; | |
| 5364 | |
| 5365 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
| 5366 return Qnil; | |
| 5367 | |
| 428 | 5368 return make_int (rb->xpos - WINDOW_LEFT (w)); |
| 5369 } | |
| 5370 | |
| 2289 | 5371 DEFUN ("current-pixel-row", Fcurrent_pixel_row, 0, 2, 0, /* |
| 5372 Return the vertical pixel position of point POS in window. Top of | |
| 5373 window is row 0. If WINDOW is nil, the current window is assumed. If | |
| 5374 POS is nil, point is assumed. Note that POS must be visible for a | |
| 5375 non-nil result to be returned. This is calculated using the redisplay | |
| 5376 display tables; because of this, the returned value will only be | |
| 5377 correct if the redisplay tables are up-to-date. Use \"(sit-for 0)\" | |
| 5378 to insure that they are; however, if WINDOW is part of a new frame, | |
| 5379 use the following instead: | |
| 5380 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
| 5381 */ | |
| 5382 (window, pos)) | |
| 5383 { | |
| 5384 struct window* w; | |
| 5385 struct display_line *dl; | |
| 5386 struct rune* rb; | |
| 5387 | |
| 5388 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
| 5389 return Qnil; | |
| 5390 | |
| 5391 return make_int (dl->ypos - dl->ascent - WINDOW_TOP (w)); | |
| 5392 } | |
| 5393 | |
| 428 | 5394 |
| 5395 #ifdef DEBUG_XEMACS | |
| 5396 /* This is short and simple in elisp, but... it was written to debug | |
| 5397 problems purely on the C side. That is where we need to call it so | |
| 5398 here it is. */ | |
| 5399 static void | |
| 5400 debug_print_window (Lisp_Object window, int level) | |
| 5401 { | |
| 5402 int i; | |
| 5403 Lisp_Object child = Fwindow_first_vchild (window); | |
| 5404 | |
| 5405 if (NILP (child)) | |
| 5406 child = Fwindow_first_hchild (window); | |
| 5407 | |
| 5408 for (i = level; i > 0; i--) | |
| 442 | 5409 stderr_out ("\t"); |
| 5410 | |
| 5411 stderr_out ("#<window"); | |
| 428 | 5412 { |
| 5413 Lisp_Object buffer = XWINDOW (window)->buffer; | |
| 5414 if (!NILP (buffer) && BUFFERP (buffer)) | |
| 442 | 5415 stderr_out (" on %s", XSTRING_DATA (XBUFFER (buffer)->name)); |
| 428 | 5416 } |
| 442 | 5417 stderr_out (" 0x%x>", XWINDOW (window)->header.uid); |
| 428 | 5418 |
| 5419 while (!NILP (child)) | |
| 5420 { | |
| 5421 debug_print_window (child, level + 1); | |
| 5422 child = Fwindow_next_child (child); | |
| 5423 } | |
| 5424 } | |
| 5425 | |
| 5426 void debug_print_windows (struct frame *f); | |
| 5427 void | |
| 5428 debug_print_windows (struct frame *f) | |
| 5429 { | |
| 5430 debug_print_window (f->root_window, 0); | |
| 5431 putc ('\n', stderr); | |
| 5432 } | |
| 5433 #endif /* DEBUG_XEMACS */ | |
| 5434 | |
| 5435 | |
| 5436 /************************************************************************/ | |
| 5437 /* initialization */ | |
| 5438 /************************************************************************/ | |
| 5439 | |
| 5440 void | |
| 5441 syms_of_window (void) | |
| 5442 { | |
| 442 | 5443 INIT_LRECORD_IMPLEMENTATION (window); |
| 617 | 5444 INIT_LRECORD_IMPLEMENTATION (window_mirror); |
| 3092 | 5445 #ifdef NEW_GC |
| 5446 INIT_LRECORD_IMPLEMENTATION (face_cachel); | |
| 5447 INIT_LRECORD_IMPLEMENTATION (face_cachel_dynarr); | |
| 5448 INIT_LRECORD_IMPLEMENTATION (glyph_cachel); | |
| 5449 INIT_LRECORD_IMPLEMENTATION (glyph_cachel_dynarr); | |
| 5450 #endif /* NEW_GC */ | |
| 442 | 5451 |
| 563 | 5452 DEFSYMBOL (Qwindowp); |
| 5453 DEFSYMBOL (Qwindow_live_p); | |
| 5454 DEFSYMBOL (Qdisplay_buffer); | |
| 428 | 5455 |
| 5456 #ifdef MEMORY_USAGE_STATS | |
| 563 | 5457 DEFSYMBOL (Qface_cache); |
| 5458 DEFSYMBOL (Qglyph_cache); | |
| 5459 DEFSYMBOL (Qline_start_cache); | |
| 428 | 5460 #ifdef HAVE_SCROLLBARS |
| 563 | 5461 DEFSYMBOL (Qscrollbar_instances); |
| 428 | 5462 #endif |
| 563 | 5463 DEFSYMBOL (Qother_redisplay); |
| 428 | 5464 /* Qother in general.c */ |
| 5465 #endif | |
| 5466 | |
| 707 | 5467 DEFSYMBOL (Qtruncate_partial_width_windows); |
| 1149 | 5468 DEFSYMBOL (Qcurrent_window_configuration); |
| 5469 DEFSYMBOL (Qset_window_configuration); | |
| 707 | 5470 |
| 428 | 5471 DEFSUBR (Fselected_window); |
| 5472 DEFSUBR (Flast_nonminibuf_window); | |
| 5473 DEFSUBR (Fminibuffer_window); | |
| 5474 DEFSUBR (Fwindow_minibuffer_p); | |
| 5475 DEFSUBR (Fwindowp); | |
| 5476 DEFSUBR (Fwindow_live_p); | |
| 5477 DEFSUBR (Fwindow_first_hchild); | |
| 5478 DEFSUBR (Fwindow_first_vchild); | |
| 5479 DEFSUBR (Fwindow_next_child); | |
| 5480 DEFSUBR (Fwindow_previous_child); | |
| 5481 DEFSUBR (Fwindow_parent); | |
| 5482 DEFSUBR (Fwindow_lowest_p); | |
| 5483 DEFSUBR (Fwindow_truncated_p); | |
| 5484 DEFSUBR (Fwindow_highest_p); | |
| 5485 DEFSUBR (Fwindow_leftmost_p); | |
| 5486 DEFSUBR (Fwindow_rightmost_p); | |
| 5487 DEFSUBR (Fpos_visible_in_window_p); | |
| 5488 DEFSUBR (Fwindow_buffer); | |
| 5489 DEFSUBR (Fwindow_frame); | |
| 5490 DEFSUBR (Fwindow_height); | |
| 5491 DEFSUBR (Fwindow_displayed_height); | |
| 5492 DEFSUBR (Fwindow_width); | |
| 442 | 5493 DEFSUBR (Fwindow_full_width); |
| 428 | 5494 DEFSUBR (Fwindow_pixel_height); |
| 5495 DEFSUBR (Fwindow_pixel_width); | |
| 442 | 5496 DEFSUBR (Fwindow_text_area_height); |
| 428 | 5497 DEFSUBR (Fwindow_text_area_pixel_height); |
| 5498 DEFSUBR (Fwindow_displayed_text_pixel_height); | |
| 5499 DEFSUBR (Fwindow_text_area_pixel_width); | |
| 5500 DEFSUBR (Fwindow_hscroll); | |
| 438 | 5501 DEFSUBR (Fset_window_hscroll); |
| 428 | 5502 DEFSUBR (Fmodeline_hscroll); |
| 5503 DEFSUBR (Fset_modeline_hscroll); | |
| 5504 DEFSUBR (Fwindow_pixel_edges); | |
| 5505 DEFSUBR (Fwindow_text_area_pixel_edges); | |
| 5506 DEFSUBR (Fwindow_point); | |
| 5507 DEFSUBR (Fwindow_start); | |
| 5508 DEFSUBR (Fwindow_end); | |
| 442 | 5509 DEFSUBR (Fwindow_last_line_visible_height); |
| 428 | 5510 DEFSUBR (Fset_window_point); |
| 5511 DEFSUBR (Fset_window_start); | |
| 5512 DEFSUBR (Fwindow_dedicated_p); | |
| 5513 DEFSUBR (Fset_window_dedicated_p); | |
| 5514 DEFSUBR (Fnext_window); | |
| 5515 DEFSUBR (Fprevious_window); | |
| 5516 DEFSUBR (Fnext_vertical_window); | |
| 5517 DEFSUBR (Fother_window); | |
| 5518 DEFSUBR (Fget_lru_window); | |
| 5519 DEFSUBR (Fget_largest_window); | |
| 5520 DEFSUBR (Fget_buffer_window); | |
| 5521 DEFSUBR (Fwindow_left_margin_pixel_width); | |
| 5522 DEFSUBR (Fwindow_right_margin_pixel_width); | |
| 5523 DEFSUBR (Fdelete_other_windows); | |
| 5524 DEFSUBR (Fdelete_windows_on); | |
| 5525 DEFSUBR (Freplace_buffer_in_windows); | |
| 5526 DEFSUBR (Fdelete_window); | |
| 5527 DEFSUBR (Fset_window_buffer); | |
| 5528 DEFSUBR (Fselect_window); | |
| 5529 DEFSUBR (Fsplit_window); | |
| 5530 DEFSUBR (Fenlarge_window); | |
| 5531 DEFSUBR (Fenlarge_window_pixels); | |
| 5532 DEFSUBR (Fshrink_window); | |
| 5533 DEFSUBR (Fshrink_window_pixels); | |
| 5534 DEFSUBR (Fscroll_up); | |
| 5535 DEFSUBR (Fscroll_down); | |
| 5536 DEFSUBR (Fscroll_left); | |
| 5537 DEFSUBR (Fscroll_right); | |
| 5538 DEFSUBR (Fother_window_for_scrolling); | |
| 5539 DEFSUBR (Fscroll_other_window); | |
| 5540 DEFSUBR (Fcenter_to_window_line); | |
| 5541 DEFSUBR (Fmove_to_window_line); | |
| 5542 #ifdef MEMORY_USAGE_STATS | |
| 5543 DEFSUBR (Fwindow_memory_usage); | |
| 5544 #endif | |
| 5545 DEFSUBR (Fcurrent_pixel_column); | |
| 2289 | 5546 DEFSUBR (Fcurrent_pixel_row); |
| 428 | 5547 } |
| 5548 | |
| 5549 void | |
| 5550 reinit_vars_of_window (void) | |
| 5551 { | |
| 5552 /* Make sure all windows get marked */ | |
| 5553 minibuf_window = Qnil; | |
| 5554 staticpro_nodump (&minibuf_window); | |
| 5555 } | |
| 5556 | |
| 5557 void | |
| 5558 vars_of_window (void) | |
| 5559 { | |
| 5560 DEFVAR_BOOL ("scroll-on-clipped-lines", &scroll_on_clipped_lines /* | |
| 5561 *Non-nil means to scroll if point lands on a line which is clipped. | |
| 5562 */ ); | |
| 5563 scroll_on_clipped_lines = 1; | |
| 5564 | |
| 5565 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function /* | |
| 5566 Non-nil means call as function to display a help buffer. | |
| 5567 The function is called with one argument, the buffer to be displayed. | |
| 5568 Used by `with-output-to-temp-buffer'. | |
| 5569 If this function is used, then it must do the entire job of showing | |
| 5570 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. | |
| 442 | 5571 \(`temp-buffer-show-hook' is obsolete. Do not use in new code.) |
| 428 | 5572 */ ); |
| 5573 Vtemp_buffer_show_function = Qnil; | |
| 5574 | |
| 5575 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuffer_scroll_window /* | |
| 5576 Non-nil means it is the window that \\<minibuffer-local-map>\\[scroll-other-window] in minibuffer should scroll. | |
| 5577 */ ); | |
| 5578 Vminibuffer_scroll_window = Qnil; | |
| 5579 | |
| 5580 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer /* | |
| 5581 If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. | |
| 5582 */ ); | |
| 5583 Vother_window_scroll_buffer = Qnil; | |
| 5584 | |
| 5585 DEFVAR_LISP ("window-pixel-scroll-increment", &Vwindow_pixel_scroll_increment /* | |
| 5586 *Number of pixels to scroll by per requested line. | |
| 5587 If nil then normal line scrolling occurs regardless of line height. | |
| 5588 If t then scrolling is done in increments equal to the height of the default face. | |
| 5589 */ ); | |
| 5590 Vwindow_pixel_scroll_increment = Qt; | |
| 5591 | |
| 5592 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines /* | |
| 5593 *Number of lines of continuity when scrolling by screenfuls. | |
| 5594 */ ); | |
| 5595 next_screen_context_lines = 2; | |
| 5596 | |
| 5597 DEFVAR_INT ("window-min-height", &window_min_height /* | |
| 5598 *Delete any window less than this tall (including its modeline). | |
| 5599 */ ); | |
| 5600 window_min_height = 4; | |
| 5601 | |
| 5602 DEFVAR_INT ("window-min-width", &window_min_width /* | |
| 5603 *Delete any window less than this wide. | |
| 5604 */ ); | |
| 5605 window_min_width = 10; | |
| 5606 } | |
| 5607 | |
| 5608 void | |
| 5609 specifier_vars_of_window (void) | |
| 5610 { | |
| 5611 DEFVAR_SPECIFIER ("modeline-shadow-thickness", &Vmodeline_shadow_thickness /* | |
| 5612 *How thick to draw 3D shadows around modelines. | |
| 5613 If this is set to 0, modelines will be the traditional 2D. Sizes above | |
| 5614 10 will be accepted but the maximum thickness that will be drawn is 10. | |
| 5615 This is a specifier; use `set-specifier' to change it. | |
| 5616 */ ); | |
| 5617 Vmodeline_shadow_thickness = Fmake_specifier (Qinteger); | |
| 5618 /* The initial value for modeline-shadow-thickness is 2, but if the | |
| 5619 user removes all specifications we provide a fallback value of 0, | |
| 5620 which is probably what was expected. */ | |
| 5621 set_specifier_fallback (Vmodeline_shadow_thickness, | |
| 5622 list1 (Fcons (Qnil, Qzero))); | |
| 5623 Fadd_spec_to_specifier (Vmodeline_shadow_thickness, make_int (2), | |
| 5624 Qnil, Qnil, Qnil); | |
| 5625 set_specifier_caching (Vmodeline_shadow_thickness, | |
| 438 | 5626 offsetof (struct window, modeline_shadow_thickness), |
| 428 | 5627 modeline_shadow_thickness_changed, |
| 444 | 5628 0, 0, 0); |
| 428 | 5629 |
| 5630 DEFVAR_SPECIFIER ("has-modeline-p", &Vhas_modeline_p /* | |
| 5631 *Whether the modeline should be displayed. | |
| 5632 This is a specifier; use `set-specifier' to change it. | |
| 5633 */ ); | |
| 5634 Vhas_modeline_p = Fmake_specifier (Qboolean); | |
| 5635 set_specifier_fallback (Vhas_modeline_p, | |
| 5636 list1 (Fcons (Qnil, Qt))); | |
| 5637 set_specifier_caching (Vhas_modeline_p, | |
| 438 | 5638 offsetof (struct window, has_modeline_p), |
| 428 | 5639 /* #### It's strange that we need a special |
| 5640 flag to indicate that the shadow-thickness | |
| 5641 has changed, but not one to indicate that | |
| 5642 the modeline has been turned off or on. */ | |
| 5643 some_window_value_changed, | |
| 444 | 5644 0, 0, 0); |
| 428 | 5645 |
| 5646 DEFVAR_SPECIFIER ("vertical-divider-always-visible-p", | |
| 5647 &Vvertical_divider_always_visible_p /* | |
| 5648 *Should XEmacs always display vertical dividers between windows. | |
| 5649 | |
| 5650 When this is non-nil, vertical dividers are always shown, and are | |
| 5651 draggable. When it is nil, vertical dividers are shown only when | |
| 5652 there are no scrollbars in between windows, and are not draggable. | |
| 5653 | |
| 5654 This is a specifier; use `set-specifier' to change it. | |
| 5655 */ ); | |
| 5656 Vvertical_divider_always_visible_p = Fmake_specifier (Qboolean); | |
| 5657 set_specifier_fallback (Vvertical_divider_always_visible_p, | |
| 5658 list1 (Fcons (Qnil, Qt))); | |
| 5659 set_specifier_caching (Vvertical_divider_always_visible_p, | |
| 438 | 5660 offsetof (struct window, |
| 5661 vertical_divider_always_visible_p), | |
| 428 | 5662 vertical_divider_changed_in_window, |
| 444 | 5663 0, 0, 0); |
| 428 | 5664 |
| 5665 DEFVAR_SPECIFIER ("vertical-divider-shadow-thickness", &Vvertical_divider_shadow_thickness /* | |
| 5666 *How thick to draw 3D shadows around vertical dividers. | |
| 5667 This is a specifier; use `set-specifier' to change it. | |
| 5668 */ ); | |
| 5669 Vvertical_divider_shadow_thickness = Fmake_specifier (Qinteger); | |
| 5670 set_specifier_fallback (Vvertical_divider_shadow_thickness, | |
| 5671 list1 (Fcons (Qnil, Qzero))); | |
| 5672 Fadd_spec_to_specifier (Vvertical_divider_shadow_thickness, make_int (2), | |
| 5673 Qnil, Qnil, Qnil); | |
| 5674 set_specifier_caching (Vvertical_divider_shadow_thickness, | |
| 438 | 5675 offsetof (struct window, |
| 5676 vertical_divider_shadow_thickness), | |
| 428 | 5677 vertical_divider_changed_in_window, |
| 444 | 5678 0, 0, 0); |
| 428 | 5679 DEFVAR_SPECIFIER ("vertical-divider-line-width", &Vvertical_divider_line_width /* |
| 5680 *The width of the vertical dividers, not including shadows. | |
| 5681 | |
| 5682 For TTY windows, divider line is always one character wide. When | |
| 5683 instance of this specifier is zero in a TTY window, no divider is | |
| 5684 drawn at all between windows. When non-zero, a one character wide | |
| 5685 divider is displayed. | |
| 5686 | |
| 5687 This is a specifier; use `set-specifier' to change it. | |
| 5688 */ ); | |
| 5689 | |
| 5690 Vvertical_divider_line_width = Fmake_specifier (Qnatnum); | |
| 5691 { | |
| 5692 Lisp_Object fb = Qnil; | |
| 5693 #ifdef HAVE_TTY | |
| 5694 fb = Fcons (Fcons (list1 (Qtty), make_int (1)), fb); | |
| 5695 #endif | |
| 462 | 5696 #ifdef HAVE_GTK |
| 5697 fb = Fcons (Fcons (list1 (Qgtk), make_int (3)), fb); | |
| 5698 #endif | |
| 428 | 5699 #ifdef HAVE_X_WINDOWS |
| 5700 fb = Fcons (Fcons (list1 (Qx), make_int (3)), fb); | |
| 5701 #endif | |
| 5702 #ifdef HAVE_MS_WINDOWS | |
| 5703 /* #### This should be made magic and made to obey system settings */ | |
| 5704 fb = Fcons (Fcons (list1 (Qmswindows), make_int (3)), fb); | |
| 5705 #endif | |
| 5706 set_specifier_fallback (Vvertical_divider_line_width, fb); | |
| 5707 } | |
| 5708 set_specifier_caching (Vvertical_divider_line_width, | |
| 438 | 5709 offsetof (struct window, |
| 5710 vertical_divider_line_width), | |
| 428 | 5711 vertical_divider_changed_in_window, |
| 444 | 5712 0, 0, 0); |
| 428 | 5713 |
| 5714 DEFVAR_SPECIFIER ("vertical-divider-spacing", &Vvertical_divider_spacing /* | |
| 5715 *How much space to leave around the vertical dividers. | |
| 5716 | |
| 5717 In TTY windows, spacing is always zero, and the value of this | |
| 5718 specifier is ignored. | |
| 5719 | |
| 5720 This is a specifier; use `set-specifier' to change it. | |
| 5721 */ ); | |
| 5722 Vvertical_divider_spacing = Fmake_specifier (Qnatnum); | |
| 5723 { | |
| 5724 Lisp_Object fb = Qnil; | |
| 5725 #ifdef HAVE_TTY | |
| 5726 fb = Fcons (Fcons (list1 (Qtty), Qzero), fb); | |
| 5727 #endif | |
| 5728 #ifdef HAVE_X_WINDOWS | |
| 5729 /* #### 3D dividers look great on MS Windows with spacing = 0. | |
| 5730 Should not the same value be the fallback under X? - kkm */ | |
| 5731 fb = Fcons (Fcons (list1 (Qx), make_int (2)), fb); | |
| 5732 #endif | |
| 462 | 5733 #ifdef HAVE_GTK |
| 5734 fb = Fcons (Fcons (list1 (Qgtk), Qzero), fb); | |
| 5735 #endif | |
| 428 | 5736 #ifdef HAVE_MS_WINDOWS |
| 5737 fb = Fcons (Fcons (list1 (Qmswindows), Qzero), fb); | |
| 5738 #endif | |
| 5739 set_specifier_fallback (Vvertical_divider_spacing, fb); | |
| 5740 } | |
| 5741 set_specifier_caching (Vvertical_divider_spacing, | |
| 438 | 5742 offsetof (struct window, vertical_divider_spacing), |
| 428 | 5743 vertical_divider_changed_in_window, |
| 444 | 5744 0, 0, 0); |
| 5745 } |